21815753 ÷ 757 
The aim is to understand the frequency of 757 in 21815753.

On to step 1:
757 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 757

Step 2:
757 goes into 21 0 times with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (8) from the dividend, add it to 21, then carry on: 218 / 757

Let's proceed to step 3:
218 divided by 757 is 0 with a remainder of 218.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 218 after subtracting 0 from 218.
Take the next digit (1) from the dividend and append it to 218, then repeat: 2181 / 757

Moving on to step 4:
757 goes into 2181 2 times with a remainder of 667.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 1514 from 2181, we get 667.
Include the next digit (5) from the dividend after 667, then repeat: 6675 / 757

On to step 5:
If we divide 6675 by 757, we get 8 and a remainder of 619.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtracting 6056 from 6675 leaves us with 619.
Fetch the next digit (7) from the dividend, attach it to 619 and continue: 6197 / 757

Going ahead to step 6:
The number 757 fits into 6197 8 times, leaving a remainder of 141.
Record the quotient 8 as the next digit in the result. 
Result so far: 288.0
Subtract 6056 from 6197 to get 141.
Fetch the next digit (5) from the dividend, attach it to 141 and continue: 1415 / 757

Going ahead to step 7:
If we divide 1415 by 757, we get 1 and a remainder of 658.
Put 1 as the next digit of the answer. 
Result so far: 2881.0
If we subtract 757 from 1415, we get 658.
Fetch the next digit (3) from the dividend, attach it to 658 and continue: 6583 / 757

Step 8:
6583 divided by 757 is 8 with a remainder of 527.
The number 8 becomes the next digit in our result. 
Result so far: 28818.0
Deduct 6056 from 6583 and we're left with 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

On to step 9:
When dividing 5270 by 757, we get 6 with a remainder of 728.
Write down 6 as next digit of the result. 
Result so far: 28818.6
Subtract 4542 from 5270 to get 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

On to step 10:
757 goes into 7280 9 times with a remainder of 467.
The number 9 becomes the next digit in our result. 
Result so far: 28818.69
Deduct 6813 from 7280 and we're left with 467.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4670, and continue the process.

Going ahead to step 11:
757 can be fit into 4670 6 times, resulting in a remainder of 128.
The next digit of our result is 6. 
Result so far: 28818.696
Subtract 4542 from 4670 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 12:
If we divide 1280 by 757, we get 1 and a remainder of 523.
Put 1 as the next digit of the answer. 
Result so far: 28818.6961
The remainder is 523 after subtracting 757 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5230, and continue the process.

Advancing to step 13:
757 goes into 5230 6 times with a remainder of 688.
Put 6 as the next digit of the answer. 
Result so far: 28818.69616
The remainder is 688 after subtracting 4542 from 5230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

Advancing to step 14:
The number 757 fits into 6880 9 times, leaving a remainder of 67.
Write down 9 as next digit of the result. 
Result so far: 28818.696169
Subtract 6813 from 6880 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 15:
When dividing 670 by 757, we get 0 with a remainder of 670.
The next digit of our result is 0. 
Result so far: 28818.696169
Subtract 0 from 670 to get 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6700, and continue the process.

Going ahead to step 16:
757 can be fit into 6700 8 times, resulting in a remainder of 644.
Write down 8 as next digit of the result. 
Result so far: 28818.69616908
If we take 6056 away from 6700, we end up with 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

The final result is 28818.69616908 with a remainder of 6.44e-07.