10639978 divided by 766 
We want to figure out the number of times 10639978 can be divided by 766.

Going ahead to step 1:
If we divide 1 by 766, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 766

Step 2:
When dividing 10 by 766, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 10 and we're left with 10.
Grab the next digit (6) from the dividend, add it to 10, then carry on: 106 / 766

Advancing to step 3:
106 divided by 766 is 0 with a remainder of 106.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 106 to get 106.
Take the next digit (3) from the dividend and append it to 106, then repeat: 1063 / 766

Advancing to step 4:
If we divide 1063 by 766, we get 1 and a remainder of 297.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 766 from 1063 and we're left with 297.
Include the next digit (9) from the dividend after 297, then repeat: 2979 / 766

Going ahead to step 5:
2979 divided by 766 is 3 with a remainder of 681.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 2298 from 2979 and we're left with 681.
Fetch the next digit (9) from the dividend, attach it to 681 and continue: 6819 / 766

Moving on to step 6:
766 goes into 6819 8 times with a remainder of 691.
The next digit of our result is 8. 
Result so far: 138.0
Subtracting 6128 from 6819 leaves us with 691.
Grab the next digit (7) from the dividend, add it to 691, then carry on: 6917 / 766

Advancing to step 7:
The number 766 fits into 6917 9 times, leaving a remainder of 23.
Put 9 as the next digit of the answer. 
Result so far: 1389.0
Deduct 6894 from 6917 and we're left with 23.
Append the next digit (8) from the dividend to 23 and continue with: 238 / 766

On to step 8:
766 can be fit into 238 0 times, resulting in a remainder of 238.
The number 0 becomes the next digit in our result. 
Result so far: 13890.0
Subtracting 0 from 238 leaves us with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Step 9:
If we divide 2380 by 766, we get 3 and a remainder of 82.
The number 3 becomes the next digit in our result. 
Result so far: 13890.3
Deduct 2298 from 2380 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Advancing to step 10:
820 divided by 766 is 1 with a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 13890.31
If we take 766 away from 820, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 11:
766 can be fit into 540 0 times, resulting in a remainder of 540.
Put 0 as the next digit of the answer. 
Result so far: 13890.31
Subtract 0 from 540 to get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Going ahead to step 12:
When dividing 5400 by 766, we get 7 with a remainder of 38.
The number 7 becomes the next digit in our result. 
Result so far: 13890.3107
Deduct 5362 from 5400 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 13:
766 can be fit into 380 0 times, resulting in a remainder of 380.
Record the quotient 0 as the next digit in the result. 
Result so far: 13890.3107
The remainder is 380 after subtracting 0 from 380.
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 14:
766 goes into 3800 4 times with a remainder of 736.
The next digit of our result is 4. 
Result so far: 13890.310704
Deduct 3064 from 3800 and we're left with 736.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7360, and continue the process.

Going ahead to step 15:
If we divide 7360 by 766, we get 9 and a remainder of 466.
Record the quotient 9 as the next digit in the result. 
Result so far: 13890.3107049
The remainder is 466 after subtracting 6894 from 7360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Moving on to step 16:
766 goes into 4660 6 times with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 13890.31070496
The remainder is 64 after subtracting 4596 from 4660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

After the division, we end up with 13890.31070496 and a remainder of 6.4e-08.