78375992 ÷ 866 
Let's see how many times 866 fits into 78375992.

Let's proceed to step 1:
866 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 866

Advancing to step 2:
78 divided by 866 is 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Fetch the next digit (3) from the dividend, attach it to 78 and continue: 783 / 866

Advancing to step 3:
If we divide 783 by 866, we get 0 and a remainder of 783.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 783 after subtracting 0 from 783.
Fetch the next digit (7) from the dividend, attach it to 783 and continue: 7837 / 866

Let's proceed to step 4:
If we divide 7837 by 866, we get 9 and a remainder of 43.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtract 7794 from 7837 to get 43.
Append the next digit (5) from the dividend to 43 and continue with: 435 / 866

Going ahead to step 5:
866 can be fit into 435 0 times, resulting in a remainder of 435.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
If we take 0 away from 435, we end up with 435.
Append the next digit (9) from the dividend to 435 and continue with: 4359 / 866

On to step 6:
If we divide 4359 by 866, we get 5 and a remainder of 29.
The number 5 becomes the next digit in our result. 
Result so far: 905.0
The remainder is 29 after subtracting 4330 from 4359.
Grab the next digit (9) from the dividend, add it to 29, then carry on: 299 / 866

Advancing to step 7:
299 divided by 866 is 0 with a remainder of 299.
Record the quotient 0 as the next digit in the result. 
Result so far: 9050.0
The remainder is 299 after subtracting 0 from 299.
Grab the next digit (2) from the dividend, add it to 299, then carry on: 2992 / 866

On to step 8:
2992 divided by 866 is 3 with a remainder of 394.
Record the quotient 3 as the next digit in the result. 
Result so far: 90503.0
If we subtract 2598 from 2992, we get 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Let's proceed to step 9:
866 goes into 3940 4 times with a remainder of 476.
The number 4 becomes the next digit in our result. 
Result so far: 90503.4
Deduct 3464 from 3940 and we're left with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

On to step 10:
When dividing 4760 by 866, we get 5 with a remainder of 430.
Put 5 as the next digit of the answer. 
Result so far: 90503.45
The remainder is 430 after subtracting 4330 from 4760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

On to step 11:
866 can be fit into 4300 4 times, resulting in a remainder of 836.
Write down 4 as next digit of the result. 
Result so far: 90503.454
If we subtract 3464 from 4300, we get 836.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8360, and continue the process.

Let's proceed to step 12:
866 can be fit into 8360 9 times, resulting in a remainder of 566.
The number 9 becomes the next digit in our result. 
Result so far: 90503.4549
Deduct 7794 from 8360 and we're left with 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

Advancing to step 13:
The number 866 fits into 5660 6 times, leaving a remainder of 464.
Write down 6 as next digit of the result. 
Result so far: 90503.45496
Subtract 5196 from 5660 to 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.

Moving on to step 14:
When dividing 4640 by 866, we get 5 with a remainder of 310.
The number 5 becomes the next digit in our result. 
Result so far: 90503.454965
Subtracting 4330 from 4640 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Moving on to step 15:
866 can be fit into 3100 3 times, resulting in a remainder of 502.
Use 3 as the next digit of our solution. 
Result so far: 90503.4549653
The remainder is 502 after subtracting 2598 from 3100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5020, and continue the process.

Going ahead to step 16:
If we divide 5020 by 866, we get 5 and a remainder of 690.
Put 5 as the next digit of the answer. 
Result so far: 90503.45496535
If we subtract 4330 from 5020, we get 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6900, and continue the process.

The final outcome is 90503.45496535, with a leftover of 6.9e-07.