To find a part of a whole, we will multiply the fraction (or part) by the whole number.

In this case, the question is asking us to find the quarter.  A quarter is equivalent to .  So it is asking us to find

Now, we will multiply.

Therefore, a quarter of  is .

To find a fraction of a whole number, we will multiply the fraction by the whole number.  So to find

 of 

we will simply multiply.  So,

Now, before we multiply, we can simplify the fractions to make things easier.  We can simplify the 7 and the 42.  The number 7 can divide into both of those numbers.  So, we get

Therefore,  of  is .

Since they invested equally, the four friends will divide the profit equally by .  

So, using long division one share will be,

Another approach is to pull out factors as follows.

One two on the top and one two on the bottom cancel out. Next factor the numerator again.

The two on the top and the two on the bottom cancel out and the final solution is seen.

To find a fraction of a whole number, we will multiply the fraction by the whole number.

So,

 of 

can be written as

To multiply, we will first write 33 in fraction form.  We get

Now, we can multiply.  We will multiply straight across.  We get

Therefore,  of  is .

To find a fraction of a whole number, we will multiply the fraction by the whole number.  So,

 of 

can be written as

Now, we can multiply.  We must first write 21 in fraction form.  We get

Now, we multiply straight across.  We get

Therefore,  of  is .

When looking at the problem, we see we need to find a quarter of .  The first thing we need to do is write "a quarter" in fraction form.  

We know that a quarter is the same as .  So, we can write it like

 of 

Now, to find a fraction of a whole number, we will multiply the fraction by the whole number.  We get

Now, to multiply, we will write  in fraction form.  We get

Now, we can multiply straight across.  We get

Therefore, a quarter of  is .

To find a fraction of a whole, we will multiply the fraction by the whole number.  So,

 of 

can be written as

Now, to multiply, we need to write 36 as a fraction.  We know that any whole number can be written as a fraction over 1.  So, we get

Now, we will multiply straight across.  We get

Therefore,   of  is .

To find a fraction of a whole number, we will multiply the fraction by the whole number.

So,

 of 

can be written as

Now, to multiply, we need to write 16 as a fraction.  We know we can write any whole number over 1.  So, we can write 16 over 1.  We get

Now, we can multiply straight across.  We get

Therefore,   of  is .

To find a fraction of a whole number, we will multiply the fraction by the whole number.

So, in the problem

three-quarters of 

we will first write three-quarters as a fraction.  

Three-quarters is the same as .  So, we can write it as

 of 

which can be re-written as

Now, we need to write 12 as a fraction.  We know that whole numbers can be written as the number over 1.  So, we can write it as

Now, we can multiply straight across.  We get

Therefore, three-quarters of  is .

To find a fraction of a whole number, we will multiply the fraction by the whole number. 

So, in the problem

 of 

we can write it as

Now, we will write 27 as a fraction.  We know a whole number can be written as a fraction over 1.  So,

Now, before we multiply, we can simplify to make things easier. We know that 3 and 27 can both be divided by 3.  So,

Now, we can multiply straight across.  We get

Therefore,  of  is .