Let's divide 87966770 by 857
We want to figure out the number of times 87966770 can be divided by 857.

Going ahead to step 1:
857 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 857

On to step 2:
87 divided by 857 is 0 with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Take the next digit (9) from the dividend and append it to 87, then repeat: 879 / 857

Let's proceed to step 3:
879 divided by 857 is 1 with a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 857 from 879 and we're left with 22.
Bring next digit (6) of the dividend behind the 22 and repeat the process: 226 / 857

Advancing to step 4:
857 goes into 226 0 times with a remainder of 226.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtract 0 from 226 to get 226.
Include the next digit (6) from the dividend after 226, then repeat: 2266 / 857

Going ahead to step 5:
If we divide 2266 by 857, we get 2 and a remainder of 552.
Write down 2 as next digit of the result. 
Result so far: 102.0
Subtract 1714 from 2266 to get 552.
Include the next digit (7) from the dividend after 552, then repeat: 5527 / 857

On to step 6:
When dividing 5527 by 857, we get 6 with a remainder of 385.
The next digit of our result is 6. 
Result so far: 1026.0
If we take 5142 away from 5527, we end up with 385.
Append the next digit (7) from the dividend to 385 and continue with: 3857 / 857

Advancing to step 7:
857 goes into 3857 4 times with a remainder of 429.
The number 4 becomes the next digit in our result. 
Result so far: 10264.0
If we take 3428 away from 3857, we end up with 429.
Take the next digit (0) from the dividend and append it to 429, then repeat: 4290 / 857

Let's proceed to step 8:
The number 857 fits into 4290 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 102645.0
If we take 4285 away from 4290, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 9:
50 divided by 857 is 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 102645.0
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
If we divide 500 by 857, we get 0 and a remainder of 500.
Use 0 as the next digit of our solution. 
Result so far: 102645.0
The remainder is 500 after subtracting 0 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

The final result is 102645.0 with a remainder of 0.5.