We look at the division of 83981945 by 637 
The aim is to understand the frequency of 637 in 83981945.

Step 1:
If we divide 8 by 637, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 637

Step 2:
637 goes into 83 0 times with a remainder of 83.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 83 leaves us with 83.
Fetch the next digit (9) from the dividend, attach it to 83 and continue: 839 / 637

On to step 3:
637 can be fit into 839 1 times, resulting in a remainder of 202.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 202 after subtracting 637 from 839.
Append the next digit (8) from the dividend to 202 and continue with: 2028 / 637

Moving on to step 4:
2028 divided by 637 is 3 with a remainder of 117.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Deduct 1911 from 2028 and we're left with 117.
Bring next digit (1) of the dividend behind the 117 and repeat the process: 1171 / 637

On to step 5:
1171 divided by 637 is 1 with a remainder of 534.
Put 1 as the next digit of the answer. 
Result so far: 131.0
If we take 637 away from 1171, we end up with 534.
Take the next digit (9) from the dividend and append it to 534, then repeat: 5349 / 637

Going ahead to step 6:
The number 637 fits into 5349 8 times, leaving a remainder of 253.
Record the quotient 8 as the next digit in the result. 
Result so far: 1318.0
Subtract 5096 from 5349 to get 253.
Grab the next digit (4) from the dividend, add it to 253, then carry on: 2534 / 637

Advancing to step 7:
If we divide 2534 by 637, we get 3 and a remainder of 623.
Put 3 as the next digit of the answer. 
Result so far: 13183.0
Subtract 1911 from 2534 to get 623.
Take the next digit (5) from the dividend and append it to 623, then repeat: 6235 / 637

Step 8:
If we divide 6235 by 637, we get 9 and a remainder of 502.
Record the quotient 9 as the next digit in the result. 
Result so far: 131839.0
If we take 5733 away from 6235, we end up with 502.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5020, and continue the process.

Step 9:
637 can be fit into 5020 7 times, resulting in a remainder of 561.
Use 7 as the next digit of our solution. 
Result so far: 131839.7
Subtracting 4459 from 5020 leaves us with 561.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5610, and continue the process.

On to step 10:
637 goes into 5610 8 times with a remainder of 514.
Use 8 as the next digit of our solution. 
Result so far: 131839.78
Subtracting 5096 from 5610 leaves us with 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Step 11:
637 goes into 5140 8 times with a remainder of 44.
The number 8 becomes the next digit in our result. 
Result so far: 131839.788
If we take 5096 away from 5140, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

In conclusion, the division gives 131839.788 with a balance of 0.0044.