20959935 ÷ 143 
We want to divide 20959935 by 143.

Step 1:
The number 143 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 143

Advancing to step 2:
143 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Include the next digit (9) from the dividend after 20, then repeat: 209 / 143

Moving on to step 3:
143 can be fit into 209 1 times, resulting in a remainder of 66.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 143 from 209 to get 66.
Bring next digit (5) of the dividend behind the 66 and repeat the process: 665 / 143

Let's proceed to step 4:
The number 143 fits into 665 4 times, leaving a remainder of 93.
Use 4 as the next digit of our solution. 
Result so far: 14.0
If we subtract 572 from 665, we get 93.
Bring next digit (9) of the dividend behind the 93 and repeat the process: 939 / 143

Moving on to step 5:
If we divide 939 by 143, we get 6 and a remainder of 81.
Put 6 as the next digit of the answer. 
Result so far: 146.0
The remainder is 81 after subtracting 858 from 939.
Grab the next digit (9) from the dividend, add it to 81, then carry on: 819 / 143

Going ahead to step 6:
When dividing 819 by 143, we get 5 with a remainder of 104.
Write down 5 as next digit of the result. 
Result so far: 1465.0
Subtracting 715 from 819 leaves us with 104.
Take the next digit (3) from the dividend and append it to 104, then repeat: 1043 / 143

On to step 7:
The number 143 fits into 1043 7 times, leaving a remainder of 42.
The next digit of our result is 7. 
Result so far: 14657.0
If we subtract 1001 from 1043, we get 42.
Grab the next digit (5) from the dividend, add it to 42, then carry on: 425 / 143

Advancing to step 8:
When dividing 425 by 143, we get 2 with a remainder of 139.
The next digit of our result is 2. 
Result so far: 146572.0
Deduct 286 from 425 and we're left with 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

Going ahead to step 9:
The number 143 fits into 1390 9 times, leaving a remainder of 103.
The number 9 becomes the next digit in our result. 
Result so far: 146572.9
Deduct 1287 from 1390 and we're left with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Moving on to step 10:
1030 divided by 143 is 7 with a remainder of 29.
The next digit of our result is 7. 
Result so far: 146572.97
If we subtract 1001 from 1030, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 11:
290 divided by 143 is 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 146572.972
Deduct 286 from 290 and we're left 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 12:
If we divide 40 by 143, we get 0 and a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 146572.972
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.

On to step 13:
If we divide 400 by 143, we get 2 and a remainder of 114.
Write down 2 as next digit of the result. 
Result so far: 146572.97202
Deduct 286 from 400 and we're left with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 14:
When dividing 1140 by 143, we get 7 with a remainder of 139.
Record the quotient 7 as the next digit in the result. 
Result so far: 146572.972027
Subtract 1001 from 1140 to get 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

Let's proceed to step 15:
143 goes into 1390 9 times with a remainder of 103.
The number 9 becomes the next digit in our result. 
Result so far: 146572.9720279
Subtracting 1287 from 1390 leaves us with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

On to step 16:
If we divide 1030 by 143, we get 7 and a remainder of 29.
Write down 7 as next digit of the result. 
Result so far: 146572.97202797
If we take 1001 away from 1030, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

The quotient of the division is 146572.97202797, and the remainder is 2.9e-08.