Let's divide 133521 by 86
We want to figure out the number of times 133521 can be divided by 86.

Moving on to step 1:
When dividing 1 by 86, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 86

Moving on 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.
Include the next digit (3) from the dividend after 13, then repeat: 133 / 86

Advancing to step 3:
The number 86 fits into 133 1 times, leaving a remainder of 47.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 86 away from 133, we end up with 47.
Append the next digit (5) from the dividend to 47 and continue with: 475 / 86

Advancing to step 4:
When dividing 475 by 86, we get 5 with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtracting 430 from 475 leaves us with 45.
Bring next digit (2) of the dividend behind the 45 and repeat the process: 452 / 86

Going ahead to step 5:
452 divided by 86 is 5 with a remainder of 22.
Record the quotient 5 as the next digit in the result. 
Result so far: 155.0
If we subtract 430 from 452, we get 22.
Take the next digit (1) from the dividend and append it to 22, then repeat: 221 / 86

Let's proceed to step 6:
221 divided by 86 is 2 with a remainder of 49.
The number 2 becomes the next digit in our result. 
Result so far: 1552.0
Subtract 172 from 221 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 7:
The number 86 fits into 490 5 times, leaving a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 1552.5
The remainder is 60 after subtracting 430 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 8:
600 divided by 86 is 6 with a remainder of 84.
Write down 6 as next digit of the result. 
Result so far: 1552.56
Subtracting 516 from 600 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 9:
86 can be fit into 840 9 times, resulting in a remainder of 66.
The next digit of our result is 9. 
Result so far: 1552.569
Deduct 774 from 840 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 10:
When dividing 660 by 86, we get 7 with a remainder of 58.
The next digit of our result is 7. 
Result so far: 1552.5697
Deduct 602 from 660 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 11:
The number 86 fits into 580 6 times, leaving a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 1552.56976
If we subtract 516 from 580, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 12:
86 goes into 640 7 times with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 1552.569767
Subtract 602 from 640 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 13:
86 goes into 380 4 times with a remainder of 36.
The next digit of our result is 4. 
Result so far: 1552.5697674
Deduct 344 from 380 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 14:
86 can be fit into 360 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 1552.56976744
Subtracting 344 from 360 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The quotient of the division is 1552.56976744, and the remainder is 1.6e-08.