71325791 ÷ 721 
The aim is to understand the frequency of 721 in 71325791.

Let's proceed to step 1:
If we divide 7 by 721, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 721

Let's proceed to step 2:
If we divide 71 by 721, we get 0 and a remainder of 71.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 71 and we're left with 71.
Fetch the next digit (3) from the dividend, attach it to 71 and continue: 713 / 721

Advancing to step 3:
If we divide 713 by 721, we get 0 and a remainder of 713.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 713 and we're left with 713.
Bring next digit (2) of the dividend behind the 713 and repeat the process: 7132 / 721

Advancing to step 4:
7132 divided by 721 is 9 with a remainder of 643.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 6489 from 7132 to get 643.
Bring next digit (5) of the dividend behind the 643 and repeat the process: 6435 / 721

Going ahead to step 5:
721 can be fit into 6435 8 times, resulting in a remainder of 667.
Record the quotient 8 as the next digit in the result. 
Result so far: 98.0
Deduct 5768 from 6435 and we're left with 667.
Bring next digit (7) of the dividend behind the 667 and repeat the process: 6677 / 721

Let's proceed to step 6:
721 goes into 6677 9 times with a remainder of 188.
Write down 9 as next digit of the result. 
Result so far: 989.0
Subtracting 6489 from 6677 leaves us with 188.
Grab the next digit (9) from the dividend, add it to 188, then carry on: 1889 / 721

On to step 7:
The number 721 fits into 1889 2 times, leaving a remainder of 447.
Record the quotient 2 as the next digit in the result. 
Result so far: 9892.0
If we take 1442 away from 1889, we end up with 447.
Include the next digit (1) from the dividend after 447, then repeat: 4471 / 721

Going ahead to step 8:
4471 divided by 721 is 6 with a remainder of 145.
Record the quotient 6 as the next digit in the result. 
Result so far: 98926.0
If we take 4326 away from 4471, we end up with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Advancing to step 9:
721 can be fit into 1450 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 98926.2
If we take 1442 away from 1450, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
80 divided by 721 is 0 with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 98926.2
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 11:
The number 721 fits into 800 1 times, leaving a remainder of 79.
Write down 1 as next digit of the result. 
Result so far: 98926.201
Deduct 721 from 800 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 12:
The number 721 fits into 790 1 times, leaving a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 98926.2011
Subtract 721 from 790 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

The final result is 98926.2011 with a remainder of 0.00069.