391291 ÷ 964 
The aim is to understand the frequency of 964 in 391291.

Step 1:
964 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 964

Let's proceed to step 2:
964 can be fit into 39 0 times, resulting in a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Include the next digit (1) from the dividend after 39, then repeat: 391 / 964

On to step 3:
964 goes into 391 0 times with a remainder of 391.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 391, we get 391.
Bring next digit (2) of the dividend behind the 391 and repeat the process: 3912 / 964

On to step 4:
964 goes into 3912 4 times with a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 3856 from 3912 leaves us with 56.
Take the next digit (9) from the dividend and append it to 56, then repeat: 569 / 964

On to step 5:
When dividing 569 by 964, we get 0 with a remainder of 569.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Deduct 0 from 569 and we're left with 569.
Fetch the next digit (1) from the dividend, attach it to 569 and continue: 5691 / 964

Let's proceed to step 6:
The number 964 fits into 5691 5 times, leaving a remainder of 871.
Write down 5 as next digit of the result. 
Result so far: 405.0
Subtract 4820 from 5691 to get 871.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8710, and continue the process.

Going ahead to step 7:
964 can be fit into 8710 9 times, resulting in a remainder of 34.
Use 9 as the next digit of our solution. 
Result so far: 405.9
The remainder is 34 after subtracting 8676 from 8710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 8:
The number 964 fits into 340 0 times, leaving a remainder of 340.
Write down 0 as next digit of the result. 
Result so far: 405.9
If we take 0 away from 340, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Moving on to step 9:
If we divide 3400 by 964, we get 3 and a remainder of 508.
Write down 3 as next digit of the result. 
Result so far: 405.903
If we subtract 2892 from 3400, we get 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

Step 10:
If we divide 5080 by 964, we get 5 and a remainder of 260.
The next digit of our result is 5. 
Result so far: 405.9035
Subtract 4820 from 5080 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 11:
2600 divided by 964 is 2 with a remainder of 672.
The number 2 becomes the next digit in our result. 
Result so far: 405.90352
If we subtract 1928 from 2600, we get 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Let's proceed to step 12:
964 can be fit into 6720 6 times, resulting in a remainder of 936.
Use 6 as the next digit of our solution. 
Result so far: 405.903526
Deduct 5784 from 6720 and we're left with 936.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9360, and continue the process.

On to step 13:
If we divide 9360 by 964, we get 9 and a remainder of 684.
Use 9 as the next digit of our solution. 
Result so far: 405.9035269
If we take 8676 away from 9360, we end up with 684.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6840, and continue the process.

Step 14:
6840 divided by 964 is 7 with a remainder of 92.
Write down 7 as next digit of the result. 
Result so far: 405.90352697
If we subtract 6748 from 6840, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Our division results in 405.90352697 with a remaining 9.2e-08.