57402068 ÷ 143 
Let's see how many times 143 fits into 57402068.

On to step 1:
The number 143 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 143

Moving on to step 2:
The number 143 fits into 57 0 times, leaving a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 57, we end up with 57.
Append the next digit (4) from the dividend to 57 and continue with: 574 / 143

Advancing to step 3:
574 divided by 143 is 4 with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 572 from 574, we get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 143

Let's proceed to step 4:
If we divide 20 by 143, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Deduct 0 from 20 and we're left with 20.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 143

On to step 5:
The number 143 fits into 202 1 times, leaving a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 401.0
Subtract 143 from 202 to get 59.
Include the next digit (0) from the dividend after 59, then repeat: 590 / 143

Moving on to step 6:
143 goes into 590 4 times with a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 4014.0
If we take 572 away from 590, we end up with 18.
Append the next digit (6) from the dividend to 18 and continue with: 186 / 143

Step 7:
186 divided by 143 is 1 with a remainder of 43.
Record the quotient 1 as the next digit in the result. 
Result so far: 40141.0
Subtracting 143 from 186 leaves us with 43.
Bring next digit (8) of the dividend behind the 43 and repeat the process: 438 / 143

Advancing to step 8:
If we divide 438 by 143, we get 3 and a remainder of 9.
The next digit of our result is 3. 
Result so far: 401413.0
The remainder is 9 after subtracting 429 from 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 9:
90 divided by 143 is 0 with a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 401413.0
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 10:
900 divided by 143 is 6 with a remainder of 42.
Put 6 as the next digit of the answer. 
Result so far: 401413.06
If we subtract 858 from 900, we get 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 11:
The number 143 fits into 420 2 times, leaving a remainder of 134.
Write down 2 as next digit of the result. 
Result so far: 401413.062
If we subtract 286 from 420, we get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Going ahead to step 12:
1340 divided by 143 is 9 with a remainder of 53.
Record the quotient 9 as the next digit in the result. 
Result so far: 401413.0629
Subtract 1287 from 1340 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 13:
When dividing 530 by 143, we get 3 with a remainder of 101.
Write down 3 as next digit of the result. 
Result so far: 401413.06293
Subtract 429 from 530 to get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Moving on to step 14:
143 goes into 1010 7 times with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 401413.062937
The remainder is 9 after subtracting 1001 from 1010.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 15:
90 divided by 143 is 0 with a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 401413.062937
The remainder is 90 after subtracting 0 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 16:
900 divided by 143 is 6 with a remainder of 42.
The next digit of our result is 6. 
Result so far: 401413.06293706
If we take 858 away from 900, we end up 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.

The final result is 401413.06293706 with a remainder of 4.2e-08.