81542986 ÷ 637 
The aim is to understand the frequency of 637 in 81542986.

Going ahead to step 1:
If we divide 8 by 637, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 637

Advancing to step 2:
637 goes into 81 0 times with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Take the next digit (5) from the dividend and append it to 81, then repeat: 815 / 637

Moving on to step 3:
When dividing 815 by 637, we get 1 with a remainder of 178.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 637 from 815 leaves us with 178.
Bring next digit (4) of the dividend behind the 178 and repeat the process: 1784 / 637

Step 4:
637 can be fit into 1784 2 times, resulting in a remainder of 510.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtract 1274 from 1784 to get 510.
Include the next digit (2) from the dividend after 510, then repeat: 5102 / 637

Step 5:
When dividing 5102 by 637, we get 8 with a remainder of 6.
The next digit of our result is 8. 
Result so far: 128.0
Deduct 5096 from 5102 and we're left with 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 637

Advancing to step 6:
69 divided by 637 is 0 with a remainder of 69.
Write down 0 as next digit of the result. 
Result so far: 1280.0
The remainder is 69 after subtracting 0 from 69.
Fetch the next digit (8) from the dividend, attach it to 69 and continue: 698 / 637

Step 7:
698 divided by 637 is 1 with a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 12801.0
Subtracting 637 from 698 leaves us with 61.
Bring next digit (6) of the dividend behind the 61 and repeat the process: 616 / 637

Let's proceed to step 8:
637 goes into 616 0 times with a remainder of 616.
The number 0 becomes the next digit in our result. 
Result so far: 128010.0
Subtract 0 from 616 to get 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Advancing to step 9:
637 goes into 6160 9 times with a remainder of 427.
Record the quotient 9 as the next digit in the result. 
Result so far: 128010.9
If we take 5733 away from 6160, we end up with 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Going ahead to step 10:
4270 divided by 637 is 6 with a remainder of 448.
Record the quotient 6 as the next digit in the result. 
Result so far: 128010.96
Subtract 3822 from 4270 to get 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Going ahead to step 11:
637 goes into 4480 7 times with a remainder of 21.
Record the quotient 7 as the next digit in the result. 
Result so far: 128010.967
Subtracting 4459 from 4480 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 12:
637 goes into 210 0 times with a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 128010.967
Deduct 0 from 210 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Moving on to step 13:
The number 637 fits into 2100 3 times, leaving a remainder of 189.
The number 3 becomes the next digit in our result. 
Result so far: 128010.96703
Subtracting 1911 from 2100 leaves us with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Step 14:
1890 divided by 637 is 2 with a remainder of 616.
Use 2 as the next digit of our solution. 
Result so far: 128010.967032
Subtracting 1274 from 1890 leaves us with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Moving on to step 15:
637 can be fit into 6160 9 times, resulting in a remainder of 427.
Put 9 as the next digit of the answer. 
Result so far: 128010.9670329
If we subtract 5733 from 6160, we get 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Step 16:
The number 637 fits into 4270 6 times, leaving a remainder of 448.
The number 6 becomes the next digit in our result. 
Result so far: 128010.96703296
Deduct 3822 from 4270 and we're left with 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

The final result is 128010.96703296 with a remainder of 4.48e-07.