85878500 ÷ 215 
We're looking to find how many times 215 goes into 85878500.

Step 1:
If we divide 8 by 215, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 215

Let's proceed to step 2:
215 can be fit into 85 0 times, resulting in a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 85 to get 85.
Fetch the next digit (8) from the dividend, attach it to 85 and continue: 858 / 215

On to step 3:
If we divide 858 by 215, we get 3 and a remainder of 213.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 645 away from 858, we end up with 213.
Include the next digit (7) from the dividend after 213, then repeat: 2137 / 215

Let's proceed to step 4:
If we divide 2137 by 215, we get 9 and a remainder of 202.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
If we take 1935 away from 2137, we end up with 202.
Append the next digit (8) from the dividend to 202 and continue with: 2028 / 215

Moving on to step 5:
If we divide 2028 by 215, we get 9 and a remainder of 93.
The next digit of our result is 9. 
Result so far: 399.0
Deduct 1935 from 2028 and we're left with 93.
Fetch the next digit (5) from the dividend, attach it to 93 and continue: 935 / 215

Moving on to step 6:
215 goes into 935 4 times with a remainder of 75.
Put 4 as the next digit of the answer. 
Result so far: 3994.0
Subtract 860 from 935 to get 75.
Include the next digit (0) from the dividend after 75, then repeat: 750 / 215

Going ahead to step 7:
The number 215 fits into 750 3 times, leaving a remainder of 105.
The next digit of our result is 3. 
Result so far: 39943.0
If we take 645 away from 750, we end up with 105.
Grab the next digit (0) from the dividend, add it to 105, then carry on: 1050 / 215

Let's proceed to step 8:
1050 divided by 215 is 4 with a remainder of 190.
Put 4 as the next digit of the answer. 
Result so far: 399434.0
Subtract 860 from 1050 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Moving on to step 9:
The number 215 fits into 1900 8 times, leaving a remainder of 180.
The next digit of our result is 8. 
Result so far: 399434.8
Subtract 1720 from 1900 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 10:
If we divide 1800 by 215, we get 8 and a remainder of 80.
The next digit of our result is 8. 
Result so far: 399434.88
If we subtract 1720 from 1800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Our division results in 399434.88 with a remaining 0.08.