747763 ÷ 42 
The aim is to understand the frequency of 42 in 747763.

Step 1:
7 divided by 42 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 42

On to step 2:
When dividing 74 by 42, we get 1 with a remainder of 32.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 32 after subtracting 42 from 74.
Bring next digit (7) of the dividend behind the 32 and repeat the process: 327 / 42

Going ahead to step 3:
42 goes into 327 7 times with a remainder of 33.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
The remainder is 33 after subtracting 294 from 327.
Take the next digit (7) from the dividend and append it to 33, then repeat: 337 / 42

Advancing to step 4:
42 can be fit into 337 8 times, resulting in a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 178.0
Subtract 336 from 337 to get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 42

Advancing to step 5:
42 goes into 16 0 times with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 1780.0
The remainder is 16 after subtracting 0 from 16.
Grab the next digit (3) from the dividend, add it to 16, then carry on: 163 / 42

Advancing to step 6:
163 divided by 42 is 3 with a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 17803.0
If we take 126 away from 163, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 7:
42 goes into 370 8 times with a remainder of 34.
Record the quotient 8 as the next digit in the result. 
Result so far: 17803.8
The remainder is 34 after subtracting 336 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 8:
If we divide 340 by 42, we get 8 and a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 17803.88
Subtracting 336 from 340 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 17803.88 with a remaining 0.004.