78569734 ÷ 721 
The aim is to understand the frequency of 721 in 78569734.

Going ahead to step 1:
If we divide 7 by 721, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 721

Let's proceed to step 2:
When dividing 78 by 721, we get 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Take the next digit (5) from the dividend and append it to 78, then repeat: 785 / 721

Step 3:
721 goes into 785 1 times with a remainder of 64.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 64 after subtracting 721 from 785.
Include the next digit (6) from the dividend after 64, then repeat: 646 / 721

Going ahead to step 4:
The number 721 fits into 646 0 times, leaving a remainder of 646.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 646 leaves us with 646.
Bring next digit (9) of the dividend behind the 646 and repeat the process: 6469 / 721

Going ahead to step 5:
The number 721 fits into 6469 8 times, leaving a remainder of 701.
The number 8 becomes the next digit in our result. 
Result so far: 108.0
Subtract 5768 from 6469 to get 701.
Fetch the next digit (7) from the dividend, attach it to 701 and continue: 7017 / 721

On to step 6:
When dividing 7017 by 721, we get 9 with a remainder of 528.
Record the quotient 9 as the next digit in the result. 
Result so far: 1089.0
Subtracting 6489 from 7017 leaves us with 528.
Fetch the next digit (3) from the dividend, attach it to 528 and continue: 5283 / 721

Moving on to step 7:
When dividing 5283 by 721, we get 7 with a remainder of 236.
Put 7 as the next digit of the answer. 
Result so far: 10897.0
The remainder is 236 after subtracting 5047 from 5283.
Take the next digit (4) from the dividend and append it to 236, then repeat: 2364 / 721

Moving on to step 8:
When dividing 2364 by 721, we get 3 with a remainder of 201.
The next digit of our result is 3. 
Result so far: 108973.0
Subtracting 2163 from 2364 leaves us with 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Moving on to step 9:
If we divide 2010 by 721, we get 2 and a remainder of 568.
Use 2 as the next digit of our solution. 
Result so far: 108973.2
If we take 1442 away from 2010, we end up with 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Advancing to step 10:
When dividing 5680 by 721, we get 7 with a remainder of 633.
Write down 7 as next digit of the result. 
Result so far: 108973.27
Subtracting 5047 from 5680 leaves us with 633.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6330, and continue the process.

Moving on to step 11:
If we divide 6330 by 721, we get 8 and a remainder of 562.
The number 8 becomes the next digit in our result. 
Result so far: 108973.278
If we subtract 5768 from 6330, we get 562.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Going ahead to step 12:
When dividing 5620 by 721, we get 7 with a remainder of 573.
The next digit of our result is 7. 
Result so far: 108973.2787
Subtracting 5047 from 5620 leaves us with 573.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5730, and continue the process.

Going ahead to step 13:
5730 divided by 721 is 7 with a remainder of 683.
The next digit of our result is 7. 
Result so far: 108973.27877
If we take 5047 away from 5730, we end up with 683.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6830, and continue the process.

The final result is 108973.27877 with a remainder of 0.000683.