Let's divide 1263390 by 964
We're looking to find how many times 964 goes into 1263390.

Advancing to step 1:
1 divided by 964 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 964

Going ahead to step 2:
964 goes into 12 0 times with a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 964

On to step 3:
When dividing 126 by 964, we get 0 with a remainder of 126.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 126 and we're left with 126.
Fetch the next digit (3) from the dividend, attach it to 126 and continue: 1263 / 964

Moving on to step 4:
964 can be fit into 1263 1 times, resulting in a remainder of 299.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 964 from 1263, we get 299.
Bring next digit (3) of the dividend behind the 299 and repeat the process: 2993 / 964

Step 5:
The number 964 fits into 2993 3 times, leaving a remainder of 101.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
The remainder is 101 after subtracting 2892 from 2993.
Include the next digit (9) from the dividend after 101, then repeat: 1019 / 964

Step 6:
964 goes into 1019 1 times with a remainder of 55.
The next digit of our result is 1. 
Result so far: 131.0
Subtract 964 from 1019 to get 55.
Fetch the next digit (0) from the dividend, attach it to 55 and continue: 550 / 964

Step 7:
If we divide 550 by 964, we get 0 and a remainder of 550.
Record the quotient 0 as the next digit in the result. 
Result so far: 1310.0
If we take 0 away from 550, we end up with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Step 8:
When dividing 5500 by 964, we get 5 with a remainder of 680.
Write down 5 as next digit of the result. 
Result so far: 1310.5
If we subtract 4820 from 5500, we get 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

On to step 9:
964 goes into 6800 7 times with a remainder of 52.
The next digit of our result is 7. 
Result so far: 1310.57
The remainder is 52 after subtracting 6748 from 6800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 10:
520 divided by 964 is 0 with a remainder of 520.
Use 0 as the next digit of our solution. 
Result so far: 1310.57
Subtract 0 from 520 to get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Step 11:
964 goes into 5200 5 times with a remainder of 380.
Write down 5 as next digit of the result. 
Result so far: 1310.5705
The remainder is 380 after subtracting 4820 from 5200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Moving on to step 12:
3800 divided by 964 is 3 with a remainder of 908.
Record the quotient 3 as the next digit in the result. 
Result so far: 1310.57053
If we subtract 2892 from 3800, we get 908.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9080, and continue the process.

On to step 13:
9080 divided by 964 is 9 with a remainder of 404.
Write down 9 as next digit of the result. 
Result so far: 1310.570539
Deduct 8676 from 9080 and we're left with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

On to step 14:
The number 964 fits into 4040 4 times, leaving a remainder of 184.
The number 4 becomes the next digit in our result. 
Result so far: 1310.5705394
The remainder is 184 after subtracting 3856 from 4040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Let's proceed to step 15:
964 goes into 1840 1 times with a remainder of 876.
Record the quotient 1 as the next digit in the result. 
Result so far: 1310.57053941
The remainder is 876 after subtracting 964 from 1840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8760, and continue the process.

The final result is 1310.57053941 with a remainder of 8.76e-07.