143217 divided by 86 
We want to figure out the number of times 143217 can be divided by 86.

On to step 1:
If we divide 1 by 86, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 86

Step 2:
When dividing 14 by 86, we get 0 with a remainder of 14.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 86

Going ahead to step 3:
The number 86 fits into 143 1 times, leaving a remainder of 57.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 57 after subtracting 86 from 143.
Append the next digit (2) from the dividend to 57 and continue with: 572 / 86

Step 4:
86 can be fit into 572 6 times, resulting in a remainder of 56.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we take 516 away from 572, we end up with 56.
Append the next digit (1) from the dividend to 56 and continue with: 561 / 86

Advancing to step 5:
86 goes into 561 6 times with a remainder of 45.
The number 6 becomes the next digit in our result. 
Result so far: 166.0
Subtract 516 from 561 to get 45.
Fetch the next digit (7) from the dividend, attach it to 45 and continue: 457 / 86

Moving on to step 6:
86 goes into 457 5 times with a remainder of 27.
The next digit of our result is 5. 
Result so far: 1665.0
If we subtract 430 from 457, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 7:
When dividing 270 by 86, we get 3 with a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 1665.3
Subtracting 258 from 270 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 8:
86 goes into 120 1 times with a remainder of 34.
The next digit of our result is 1. 
Result so far: 1665.31
Subtracting 86 from 120 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 9:
86 can be fit into 340 3 times, resulting in a remainder of 82.
The number 3 becomes the next digit in our result. 
Result so far: 1665.313
The remainder is 82 after subtracting 258 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 10:
The number 86 fits into 820 9 times, leaving a remainder of 46.
The number 9 becomes the next digit in our result. 
Result so far: 1665.3139
If we take 774 away from 820, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 11:
460 divided by 86 is 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 1665.31395
Deduct 430 from 460 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 12:
86 can be fit into 300 3 times, resulting in a remainder of 42.
The next digit of our result is 3. 
Result so far: 1665.313953
Subtracting 258 from 300 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 13:
420 divided by 86 is 4 with a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 1665.3139534
Deduct 344 from 420 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 14:
86 goes into 760 8 times with a remainder of 72.
The number 8 becomes the next digit in our result. 
Result so far: 1665.31395348
If we take 688 away from 760, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The quotient of the division is 1665.31395348, and the remainder is 7.2e-08.