86187521 ÷ 387 
We want to divide 86187521 by 387.

Step 1:
8 divided by 387 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 387

Step 2:
387 goes into 86 0 times with a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Fetch the next digit (1) from the dividend, attach it to 86 and continue: 861 / 387

Moving on to step 3:
If we divide 861 by 387, we get 2 and a remainder of 87.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 774 from 861 leaves us with 87.
Grab the next digit (8) from the dividend, add it to 87, then carry on: 878 / 387

Going ahead to step 4:
387 goes into 878 2 times with a remainder of 104.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Subtract 774 from 878 to get 104.
Take the next digit (7) from the dividend and append it to 104, then repeat: 1047 / 387

Moving on to step 5:
If we divide 1047 by 387, we get 2 and a remainder of 273.
Use 2 as the next digit of our solution. 
Result so far: 222.0
Subtract 774 from 1047 to get 273.
Grab the next digit (5) from the dividend, add it to 273, then carry on: 2735 / 387

On to step 6:
When dividing 2735 by 387, we get 7 with a remainder of 26.
The number 7 becomes the next digit in our result. 
Result so far: 2227.0
If we take 2709 away from 2735, we end up with 26.
Bring next digit (2) of the dividend behind the 26 and repeat the process: 262 / 387

Advancing to step 7:
If we divide 262 by 387, we get 0 and a remainder of 262.
Write down 0 as next digit of the result. 
Result so far: 22270.0
Subtract 0 from 262 to get 262.
Fetch the next digit (1) from the dividend, attach it to 262 and continue: 2621 / 387

Let's proceed to step 8:
The number 387 fits into 2621 6 times, leaving a remainder of 299.
Write down 6 as next digit of the result. 
Result so far: 222706.0
Subtracting 2322 from 2621 leaves us with 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Advancing to step 9:
2990 divided by 387 is 7 with a remainder of 281.
Put 7 as the next digit of the answer. 
Result so far: 222706.7
Subtract 2709 from 2990 to get 281.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

Going ahead to step 10:
If we divide 2810 by 387, we get 7 and a remainder of 101.
Record the quotient 7 as the next digit in the result. 
Result so far: 222706.77
If we take 2709 away from 2810, we end up with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

After the division, we end up with 222706.77 and a remainder of 0.101.