72997989 divided by 97 
The aim is to understand the frequency of 97 in 72997989.

On to step 1:
97 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 97

Let's proceed to step 2:
72 divided by 97 is 0 with a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Bring next digit (9) of the dividend behind the 72 and repeat the process: 729 / 97

Let's proceed to step 3:
When dividing 729 by 97, we get 7 with a remainder of 50.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 679 from 729, we get 50.
Include the next digit (9) from the dividend after 50, then repeat: 509 / 97

On to step 4:
When dividing 509 by 97, we get 5 with a remainder of 24.
Put 5 as the next digit of the answer. 
Result so far: 75.0
The remainder is 24 after subtracting 485 from 509.
Fetch the next digit (7) from the dividend, attach it to 24 and continue: 247 / 97

On to step 5:
When dividing 247 by 97, we get 2 with a remainder of 53.
Record the quotient 2 as the next digit in the result. 
Result so far: 752.0
Deduct 194 from 247 and we're left with 53.
Fetch the next digit (9) from the dividend, attach it to 53 and continue: 539 / 97

On to step 6:
The number 97 fits into 539 5 times, leaving a remainder of 54.
The number 5 becomes the next digit in our result. 
Result so far: 7525.0
If we subtract 485 from 539, we get 54.
Fetch the next digit (8) from the dividend, attach it to 54 and continue: 548 / 97

Moving on to step 7:
If we divide 548 by 97, we get 5 and a remainder of 63.
Record the quotient 5 as the next digit in the result. 
Result so far: 75255.0
If we take 485 away from 548, we end up with 63.
Take the next digit (9) from the dividend and append it to 63, then repeat: 639 / 97

Going ahead to step 8:
When dividing 639 by 97, we get 6 with a remainder of 57.
The next digit of our result is 6. 
Result so far: 752556.0
The remainder is 57 after subtracting 582 from 639.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 9:
The number 97 fits into 570 5 times, leaving a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 752556.5
Deduct 485 from 570 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 10:
850 divided by 97 is 8 with a remainder of 74.
Write down 8 as next digit of the result. 
Result so far: 752556.58
Deduct 776 from 850 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 11:
The number 97 fits into 740 7 times, leaving a remainder of 61.
Put 7 as the next digit of the answer. 
Result so far: 752556.587
Deduct 679 from 740 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 12:
610 divided by 97 is 6 with a remainder of 28.
Write down 6 as next digit of the result. 
Result so far: 752556.5876
Subtract 582 from 610 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 13:
280 divided by 97 is 2 with a remainder of 86.
Record the quotient 2 as the next digit in the result. 
Result so far: 752556.58762
Subtracting 194 from 280 leaves us with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Advancing to step 14:
If we divide 860 by 97, we get 8 and a remainder of 84.
Write down 8 as next digit of the result. 
Result so far: 752556.587628
Subtracting 776 from 860 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 15:
When dividing 840 by 97, we get 8 with a remainder of 64.
Put 8 as the next digit of the answer. 
Result so far: 752556.5876288
Subtracting 776 from 840 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

After the division, we end up with 752556.5876288 and a remainder of 6.4e-07.