13187072 ÷ 86 
We want to figure out the number of times 13187072 can be divided by 86.

Step 1:
When dividing 1 by 86, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 86

Advancing to step 2:
13 divided by 86 is 0 with a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Bring next digit (1) of the dividend behind the 13 and repeat the process: 131 / 86

Advancing to step 3:
If we divide 131 by 86, we get 1 and a remainder of 45.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 86 from 131 and we're left with 45.
Bring next digit (8) of the dividend behind the 45 and repeat the process: 458 / 86

Advancing to step 4:
If we divide 458 by 86, we get 5 and a remainder of 28.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
The remainder is 28 after subtracting 430 from 458.
Append the next digit (7) from the dividend to 28 and continue with: 287 / 86

Going ahead to step 5:
The number 86 fits into 287 3 times, leaving a remainder of 29.
Write down 3 as next digit of the result. 
Result so far: 153.0
If we subtract 258 from 287, we get 29.
Bring next digit (0) of the dividend behind the 29 and repeat the process: 290 / 86

Moving on to step 6:
86 goes into 290 3 times with a remainder of 32.
Put 3 as the next digit of the answer. 
Result so far: 1533.0
Subtract 258 from 290 to get 32.
Fetch the next digit (7) from the dividend, attach it to 32 and continue: 327 / 86

Moving on to step 7:
When dividing 327 by 86, we get 3 with a remainder of 69.
Write down 3 as next digit of the result. 
Result so far: 15333.0
If we subtract 258 from 327, we get 69.
Take the next digit (2) from the dividend and append it to 69, then repeat: 692 / 86

On to step 8:
The number 86 fits into 692 8 times, leaving a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 153338.0
Subtracting 688 from 692 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
40 divided by 86 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 153338.0
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
400 divided by 86 is 4 with a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 153338.04
Subtract 344 from 400 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 11:
86 can be fit into 560 6 times, resulting in a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 153338.046
If we take 516 away from 560, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 12:
When dividing 440 by 86, we get 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 153338.0465
The remainder is 10 after subtracting 430 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
The number 86 fits into 100 1 times, leaving a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 153338.04651
Subtract 86 from 100 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 14:
86 can be fit into 140 1 times, resulting in a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 153338.046511
If we subtract 86 from 140, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The quotient of the division is 153338.046511, and the remainder is 5.4e-06.