71370857 divided by 642 
The aim is to understand the frequency of 642 in 71370857.

Let's proceed to step 1:
When dividing 7 by 642, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 642

On to step 2:
642 goes into 71 0 times with a remainder of 71.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 71 to get 71.
Include the next digit (3) from the dividend after 71, then repeat: 713 / 642

Step 3:
713 divided by 642 is 1 with a remainder of 71.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 642 from 713 leaves us with 71.
Take the next digit (7) from the dividend and append it to 71, then repeat: 717 / 642

Going ahead to step 4:
If we divide 717 by 642, we get 1 and a remainder of 75.
The next digit of our result is 1. 
Result so far: 11.0
If we subtract 642 from 717, we get 75.
Include the next digit (0) from the dividend after 75, then repeat: 750 / 642

Going ahead to step 5:
When dividing 750 by 642, we get 1 with a remainder of 108.
The number 1 becomes the next digit in our result. 
Result so far: 111.0
Subtract 642 from 750 to get 108.
Take the next digit (8) from the dividend and append it to 108, then repeat: 1088 / 642

Advancing to step 6:
642 goes into 1088 1 times with a remainder of 446.
The next digit of our result is 1. 
Result so far: 1111.0
Deduct 642 from 1088 and we're left with 446.
Bring next digit (5) of the dividend behind the 446 and repeat the process: 4465 / 642

Moving on to step 7:
When dividing 4465 by 642, we get 6 with a remainder of 613.
Write down 6 as next digit of the result. 
Result so far: 11116.0
If we take 3852 away from 4465, we end up with 613.
Include the next digit (7) from the dividend after 613, then repeat: 6137 / 642

Going ahead to step 8:
The number 642 fits into 6137 9 times, leaving a remainder of 359.
The number 9 becomes the next digit in our result. 
Result so far: 111169.0
Subtracting 5778 from 6137 leaves us with 359.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3590, and continue the process.

Moving on to step 9:
642 goes into 3590 5 times with a remainder of 380.
Use 5 as the next digit of our solution. 
Result so far: 111169.5
Deduct 3210 from 3590 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 10:
642 goes into 3800 5 times with a remainder of 590.
The number 5 becomes the next digit in our result. 
Result so far: 111169.55
If we subtract 3210 from 3800, we get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Our division results in 111169.55 with a remaining 0.59.