91251421 divided by 953 
The aim is to understand the frequency of 953 in 91251421.

On to step 1:
When dividing 9 by 953, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 953

Moving on to step 2:
953 can be fit into 91 0 times, resulting in a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Append the next digit (2) from the dividend to 91 and continue with: 912 / 953

Let's proceed to step 3:
953 can be fit into 912 0 times, resulting in a remainder of 912.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 912 after subtracting 0 from 912.
Bring next digit (5) of the dividend behind the 912 and repeat the process: 9125 / 953

Advancing to step 4:
If we divide 9125 by 953, we get 9 and a remainder of 548.
The next digit of our result is 9. 
Result so far: 9.0
Deduct 8577 from 9125 and we're left with 548.
Append the next digit (1) from the dividend to 548 and continue with: 5481 / 953

On to step 5:
953 can be fit into 5481 5 times, resulting in a remainder of 716.
The next digit of our result is 5. 
Result so far: 95.0
Subtract 4765 from 5481 to get 716.
Take the next digit (4) from the dividend and append it to 716, then repeat: 7164 / 953

Going ahead to step 6:
If we divide 7164 by 953, we get 7 and a remainder of 493.
Put 7 as the next digit of the answer. 
Result so far: 957.0
Subtract 6671 from 7164 to get 493.
Include the next digit (2) from the dividend after 493, then repeat: 4932 / 953

Going ahead to step 7:
953 goes into 4932 5 times with a remainder of 167.
The next digit of our result is 5. 
Result so far: 9575.0
Subtracting 4765 from 4932 leaves us with 167.
Grab the next digit (1) from the dividend, add it to 167, then carry on: 1671 / 953

Advancing to step 8:
953 can be fit into 1671 1 times, resulting in a remainder of 718.
Record the quotient 1 as the next digit in the result. 
Result so far: 95751.0
The remainder is 718 after subtracting 953 from 1671.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7180, and continue the process.

Moving on to step 9:
If we divide 7180 by 953, we get 7 and a remainder of 509.
The next digit of our result is 7. 
Result so far: 95751.7
Subtracting 6671 from 7180 leaves us with 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

Let's proceed to step 10:
953 can be fit into 5090 5 times, resulting in a remainder of 325.
Put 5 as the next digit of the answer. 
Result so far: 95751.75
If we take 4765 away from 5090, we end up with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Let's proceed to step 11:
If we divide 3250 by 953, we get 3 and a remainder of 391.
The next digit of our result is 3. 
Result so far: 95751.753
The remainder is 391 after subtracting 2859 from 3250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3910, and continue the process.

On to step 12:
When dividing 3910 by 953, we get 4 with a remainder of 98.
Write down 4 as next digit of the result. 
Result so far: 95751.7534
Subtracting 3812 from 3910 leaves us with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Advancing to step 13:
953 goes into 980 1 times with a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 95751.75341
The remainder is 27 after subtracting 953 from 980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 14:
When dividing 270 by 953, we get 0 with a remainder of 270.
Write down 0 as next digit of the result. 
Result so far: 95751.75341
If we subtract 0 from 270, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 15:
2700 divided by 953 is 2 with a remainder of 794.
Write down 2 as next digit of the result. 
Result so far: 95751.7534102
Subtract 1906 from 2700 to get 794.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7940, and continue the process.

Let's proceed to step 16:
953 can be fit into 7940 8 times, resulting in a remainder of 316.
The next digit of our result is 8. 
Result so far: 95751.75341028
Subtracting 7624 from 7940 leaves us with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

The quotient of the division is 95751.75341028, and the remainder is 3.16e-07.