93720825 ÷ 641 
The aim is to understand the frequency of 641 in 93720825.

On to step 1:
If we divide 9 by 641, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 641

Going ahead to step 2:
641 can be fit into 93 0 times, resulting in a remainder of 93.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 93 after subtracting 0 from 93.
Include the next digit (7) from the dividend after 93, then repeat: 937 / 641

On to step 3:
If we divide 937 by 641, we get 1 and a remainder of 296.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 641 from 937 and we're left with 296.
Grab the next digit (2) from the dividend, add it to 296, then carry on: 2962 / 641

Moving on to step 4:
The number 641 fits into 2962 4 times, leaving a remainder of 398.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 2564 from 2962 to get 398.
Bring next digit (0) of the dividend behind the 398 and repeat the process: 3980 / 641

Step 5:
The number 641 fits into 3980 6 times, leaving a remainder of 134.
Record the quotient 6 as the next digit in the result. 
Result so far: 146.0
Subtract 3846 from 3980 to get 134.
Append the next digit (8) from the dividend to 134 and continue with: 1348 / 641

Going ahead to step 6:
When dividing 1348 by 641, we get 2 with a remainder of 66.
Use 2 as the next digit of our solution. 
Result so far: 1462.0
Subtracting 1282 from 1348 leaves us with 66.
Append the next digit (2) from the dividend to 66 and continue with: 662 / 641

Advancing to step 7:
When dividing 662 by 641, we get 1 with a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 14621.0
Deduct 641 from 662 and we're left with 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 641

Moving on to step 8:
The number 641 fits into 215 0 times, leaving a remainder of 215.
Put 0 as the next digit of the answer. 
Result so far: 146210.0
If we take 0 away from 215, we end up with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Going ahead to step 9:
2150 divided by 641 is 3 with a remainder of 227.
Write down 3 as next digit of the result. 
Result so far: 146210.3
The remainder is 227 after subtracting 1923 from 2150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Let's proceed to step 10:
When dividing 2270 by 641, we get 3 with a remainder of 347.
Use 3 as the next digit of our solution. 
Result so far: 146210.33
Subtract 1923 from 2270 to get 347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

The quotient of the division is 146210.33, and the remainder is 0.347.