We're dividing 85286866 by 210 
Let's see how many times 210 fits into 85286866.

Let's proceed to step 1:
210 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 210

Step 2:
85 divided by 210 is 0 with a remainder of 85.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 85 after subtracting 0 from 85.
Bring next digit (2) of the dividend behind the 85 and repeat the process: 852 / 210

Moving on to step 3:
If we divide 852 by 210, we get 4 and a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 840 from 852 leaves us with 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 210

Advancing to step 4:
210 can be fit into 128 0 times, resulting in a remainder of 128.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
Subtract 0 from 128 to get 128.
Bring next digit (6) of the dividend behind the 128 and repeat the process: 1286 / 210

Step 5:
210 can be fit into 1286 6 times, resulting in a remainder of 26.
Use 6 as the next digit of our solution. 
Result so far: 406.0
The remainder is 26 after subtracting 1260 from 1286.
Include the next digit (8) from the dividend after 26, then repeat: 268 / 210

Going ahead to step 6:
When dividing 268 by 210, we get 1 with a remainder of 58.
Record the quotient 1 as the next digit in the result. 
Result so far: 4061.0
Deduct 210 from 268 and we're left with 58.
Append the next digit (6) from the dividend to 58 and continue with: 586 / 210

Step 7:
210 goes into 586 2 times with a remainder of 166.
Record the quotient 2 as the next digit in the result. 
Result so far: 40612.0
Deduct 420 from 586 and we're left with 166.
Take the next digit (6) from the dividend and append it to 166, then repeat: 1666 / 210

Going ahead to step 8:
210 goes into 1666 7 times with a remainder of 196.
Write down 7 as next digit of the result. 
Result so far: 406127.0
Subtracting 1470 from 1666 leaves us with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

On to step 9:
1960 divided by 210 is 9 with a remainder of 70.
The number 9 becomes the next digit in our result. 
Result so far: 406127.9
Deduct 1890 from 1960 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
If we divide 700 by 210, we get 3 and a remainder of 70.
Put 3 as the next digit of the answer. 
Result so far: 406127.93
The remainder is 70 after subtracting 630 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 11:
The number 210 fits into 700 3 times, leaving a remainder of 70.
Record the quotient 3 as the next digit in the result. 
Result so far: 406127.933
The remainder is 70 after subtracting 630 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final result is 406127.933 with a remainder of 0.007.