We divide 87839091 by 215
Our goal is to divide 87839091 by 215.

Step 1:
When dividing 8 by 215, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 215

On to step 2:
215 goes into 87 0 times with a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Include the next digit (8) from the dividend after 87, then repeat: 878 / 215

Let's proceed to step 3:
215 goes into 878 4 times with a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 860 from 878 to get 18.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 215

On to step 4:
215 can be fit into 183 0 times, resulting in a remainder of 183.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Deduct 0 from 183 and we're left with 183.
Fetch the next digit (9) from the dividend, attach it to 183 and continue: 1839 / 215

Going ahead to step 5:
The number 215 fits into 1839 8 times, leaving a remainder of 119.
Use 8 as the next digit of our solution. 
Result so far: 408.0
Deduct 1720 from 1839 and we're left with 119.
Include the next digit (0) from the dividend after 119, then repeat: 1190 / 215

Going ahead to step 6:
1190 divided by 215 is 5 with a remainder of 115.
Record the quotient 5 as the next digit in the result. 
Result so far: 4085.0
Deduct 1075 from 1190 and we're left with 115.
Fetch the next digit (9) from the dividend, attach it to 115 and continue: 1159 / 215

Moving on to step 7:
1159 divided by 215 is 5 with a remainder of 84.
Use 5 as the next digit of our solution. 
Result so far: 40855.0
Subtract 1075 from 1159 to get 84.
Grab the next digit (1) from the dividend, add it to 84, then carry on: 841 / 215

On to step 8:
215 goes into 841 3 times with a remainder of 196.
Use 3 as the next digit of our solution. 
Result so far: 408553.0
Subtract 645 from 841 to get 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:
If we divide 1960 by 215, we get 9 and a remainder of 25.
The next digit of our result is 9. 
Result so far: 408553.9
The remainder is 25 after subtracting 1935 from 1960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 10:
The number 215 fits into 250 1 times, leaving a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 408553.91
Subtracting 215 from 250 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 11:
350 divided by 215 is 1 with a remainder of 135.
The next digit of our result is 1. 
Result so far: 408553.911
Deduct 215 from 350 and we're left with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

The final result is 408553.911 with a remainder of 0.0135.