856521 ÷ 84 
We want to figure out the number of times 856521 can be divided by 84.

On to step 1:
84 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 84

On to step 2:
The number 84 fits into 85 1 times, leaving a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 84 from 85 to get 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 84

Going ahead to step 3:
When dividing 16 by 84, we get 0 with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 16, we get 16.
Take the next digit (5) from the dividend and append it to 16, then repeat: 165 / 84

Advancing to step 4:
When dividing 165 by 84, we get 1 with a remainder of 81.
Put 1 as the next digit of the answer. 
Result so far: 101.0
Subtract 84 from 165 to get 81.
Bring next digit (2) of the dividend behind the 81 and repeat the process: 812 / 84

On to step 5:
If we divide 812 by 84, we get 9 and a remainder of 56.
The next digit of our result is 9. 
Result so far: 1019.0
Subtracting 756 from 812 leaves us with 56.
Fetch the next digit (1) from the dividend, attach it to 56 and continue: 561 / 84

Step 6:
561 divided by 84 is 6 with a remainder of 57.
Use 6 as the next digit of our solution. 
Result so far: 10196.0
If we take 504 away from 561, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 7:
84 goes into 570 6 times with a remainder of 66.
Write down 6 as next digit of the result. 
Result so far: 10196.6
Subtract 504 from 570 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 8:
84 goes into 660 7 times with a remainder of 72.
Put 7 as the next digit of the answer. 
Result so far: 10196.67
If we take 588 away from 660, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 9:
84 can be fit into 720 8 times, resulting in a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 10196.678
If we take 672 away from 720, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 10:
480 divided by 84 is 5 with a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 10196.6785
If we take 420 away from 480, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 11:
84 can be fit into 600 7 times, resulting in a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 10196.67857
If we take 588 away from 600, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 12:
84 can be fit into 120 1 times, resulting in a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 10196.678571
Subtracting 84 from 120 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 13:
84 goes into 360 4 times with a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 10196.6785714
Subtracting 336 from 360 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 14:
When dividing 240 by 84, we get 2 with a remainder of 72.
Put 2 as the next digit of the answer. 
Result so far: 10196.67857142
The remainder is 72 after subtracting 168 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

After the division, we end up with 10196.67857142 and a remainder of 7.2e-08.