We're dividing 77525171 by 856 
We want to divide 77525171 by 856.

Advancing to step 1:
If we divide 7 by 856, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 856

On to step 2:
856 can be fit into 77 0 times, resulting in a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Append the next digit (5) from the dividend to 77 and continue with: 775 / 856

Advancing to step 3:
856 can be fit into 775 0 times, resulting in a remainder of 775.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 775 after subtracting 0 from 775.
Include the next digit (2) from the dividend after 775, then repeat: 7752 / 856

On to step 4:
When dividing 7752 by 856, we get 9 with a remainder of 48.
The next digit of our result is 9. 
Result so far: 9.0
Deduct 7704 from 7752 and we're left with 48.
Append the next digit (5) from the dividend to 48 and continue with: 485 / 856

Let's proceed to step 5:
When dividing 485 by 856, we get 0 with a remainder of 485.
Write down 0 as next digit of the result. 
Result so far: 90.0
Deduct 0 from 485 and we're left with 485.
Take the next digit (1) from the dividend and append it to 485, then repeat: 4851 / 856

Let's proceed to step 6:
The number 856 fits into 4851 5 times, leaving a remainder of 571.
The number 5 becomes the next digit in our result. 
Result so far: 905.0
Deduct 4280 from 4851 and we're left with 571.
Include the next digit (7) from the dividend after 571, then repeat: 5717 / 856

Step 7:
If we divide 5717 by 856, we get 6 and a remainder of 581.
Use 6 as the next digit of our solution. 
Result so far: 9056.0
Deduct 5136 from 5717 and we're left with 581.
Take the next digit (1) from the dividend and append it to 581, then repeat: 5811 / 856

Advancing to step 8:
If we divide 5811 by 856, we get 6 and a remainder of 675.
Put 6 as the next digit of the answer. 
Result so far: 90566.0
Deduct 5136 from 5811 and we're left with 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Let's proceed to step 9:
When dividing 6750 by 856, we get 7 with a remainder of 758.
Use 7 as the next digit of our solution. 
Result so far: 90566.7
Deduct 5992 from 6750 and we're left with 758.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7580, and continue the process.

Let's proceed to step 10:
856 goes into 7580 8 times with a remainder of 732.
Use 8 as the next digit of our solution. 
Result so far: 90566.78
Deduct 6848 from 7580 and we're left with 732.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7320, and continue the process.

Let's proceed to step 11:
The number 856 fits into 7320 8 times, leaving a remainder of 472.
Use 8 as the next digit of our solution. 
Result so far: 90566.788
If we subtract 6848 from 7320, we get 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

The final outcome is 90566.788, with a leftover of 0.0472.