We look at the division of 86909742 by 143 
Let's see how many times 143 fits into 86909742.

Let's proceed to step 1:
When dividing 8 by 143, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 143

Let's proceed to step 2:
The number 143 fits into 86 0 times, leaving a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Grab the next digit (9) from the dividend, add it to 86, then carry on: 869 / 143

Step 3:
143 can be fit into 869 6 times, resulting in a remainder of 11.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 858 from 869 to get 11.
Fetch the next digit (0) from the dividend, attach it to 11 and continue: 110 / 143

Going ahead to step 4:
The number 143 fits into 110 0 times, leaving a remainder of 110.
Record the quotient 0 as the next digit in the result. 
Result so far: 60.0
If we subtract 0 from 110, we get 110.
Take the next digit (9) from the dividend and append it to 110, then repeat: 1109 / 143

Moving on to step 5:
If we divide 1109 by 143, we get 7 and a remainder of 108.
The number 7 becomes the next digit in our result. 
Result so far: 607.0
Deduct 1001 from 1109 and we're left with 108.
Grab the next digit (7) from the dividend, add it to 108, then carry on: 1087 / 143

Let's proceed to step 6:
143 can be fit into 1087 7 times, resulting in a remainder of 86.
Use 7 as the next digit of our solution. 
Result so far: 6077.0
If we subtract 1001 from 1087, we get 86.
Append the next digit (4) from the dividend to 86 and continue with: 864 / 143

Going ahead to step 7:
143 can be fit into 864 6 times, resulting in a remainder of 6.
The next digit of our result is 6. 
Result so far: 60776.0
Deduct 858 from 864 and we're left with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 143

On to step 8:
The number 143 fits into 62 0 times, leaving a remainder of 62.
Use 0 as the next digit of our solution. 
Result so far: 607760.0
If we subtract 0 from 62, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 9:
143 goes into 620 4 times with a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 607760.4
If we subtract 572 from 620, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 10:
480 divided by 143 is 3 with a remainder of 51.
Put 3 as the next digit of the answer. 
Result so far: 607760.43
The remainder is 51 after subtracting 429 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 11:
143 goes into 510 3 times with a remainder of 81.
The next digit of our result is 3. 
Result so far: 607760.433
Subtracting 429 from 510 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Our division results in 607760.433 with a remaining 0.0081.