We divide 64312428 by 991
The aim is to understand the frequency of 991 in 64312428.

Let's proceed to step 1:
991 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 991

Advancing to step 2:
If we divide 64 by 991, we get 0 and a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Grab the next digit (3) from the dividend, add it to 64, then carry on: 643 / 991

Let's proceed to step 3:
The number 991 fits into 643 0 times, leaving a remainder of 643.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 643 after subtracting 0 from 643.
Grab the next digit (1) from the dividend, add it to 643, then carry on: 6431 / 991

Let's proceed to step 4:
When dividing 6431 by 991, we get 6 with a remainder of 485.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we take 5946 away from 6431, we end up with 485.
Append the next digit (2) from the dividend to 485 and continue with: 4852 / 991

Going ahead to step 5:
991 goes into 4852 4 times with a remainder of 888.
Use 4 as the next digit of our solution. 
Result so far: 64.0
If we subtract 3964 from 4852, we get 888.
Bring next digit (4) of the dividend behind the 888 and repeat the process: 8884 / 991

On to step 6:
8884 divided by 991 is 8 with a remainder of 956.
Write down 8 as next digit of the result. 
Result so far: 648.0
If we subtract 7928 from 8884, we get 956.
Bring next digit (2) of the dividend behind the 956 and repeat the process: 9562 / 991

Going ahead to step 7:
When dividing 9562 by 991, we get 9 with a remainder of 643.
The next digit of our result is 9. 
Result so far: 6489.0
Subtract 8919 from 9562 to get 643.
Bring next digit (8) of the dividend behind the 643 and repeat the process: 6438 / 991

On to step 8:
6438 divided by 991 is 6 with a remainder of 492.
The next digit of our result is 6. 
Result so far: 64896.0
If we take 5946 away from 6438, we end up with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Moving on to step 9:
4920 divided by 991 is 4 with a remainder of 956.
Record the quotient 4 as the next digit in the result. 
Result so far: 64896.4
Deduct 3964 from 4920 and we're left with 956.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9560, and continue the process.

Advancing to step 10:
If we divide 9560 by 991, we get 9 and a remainder of 641.
The next digit of our result is 9. 
Result so far: 64896.49
Deduct 8919 from 9560 and we're left with 641.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6410, and continue the process.

Advancing to step 11:
991 can be fit into 6410 6 times, resulting in a remainder of 464.
Use 6 as the next digit of our solution. 
Result so far: 64896.496
If we subtract 5946 from 6410, we get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Let's proceed to step 12:
4640 divided by 991 is 4 with a remainder of 676.
The next digit of our result is 4. 
Result so far: 64896.4964
If we take 3964 away from 4640, we end up with 676.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6760, and continue the process.

On to step 13:
When dividing 6760 by 991, we get 6 with a remainder of 814.
Write down 6 as next digit of the result. 
Result so far: 64896.49646
Subtracting 5946 from 6760 leaves us with 814.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8140, and continue the process.

Step 14:
When dividing 8140 by 991, we get 8 with a remainder of 212.
Record the quotient 8 as the next digit in the result. 
Result so far: 64896.496468
Subtract 7928 from 8140 to get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Let's proceed to step 15:
When dividing 2120 by 991, we get 2 with a remainder of 138.
Put 2 as the next digit of the answer. 
Result so far: 64896.4964682
The remainder is 138 after subtracting 1982 from 2120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

On to step 16:
991 can be fit into 1380 1 times, resulting in a remainder of 389.
The next digit of our result is 1. 
Result so far: 64896.49646821
If we take 991 away from 1380, we end up with 389.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

After the division, we end up with 64896.49646821 and a remainder of 3.89e-07.