We're dividing 51203733 by 143 
We want to figure out the number of times 51203733 can be divided by 143.

Moving on to step 1:
If we divide 5 by 143, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 143

Going ahead to step 2:
If we divide 51 by 143, we get 0 and a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Grab the next digit (2) from the dividend, add it to 51, then carry on: 512 / 143

Let's proceed to step 3:
143 goes into 512 3 times with a remainder of 83.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 429 away from 512, we end up with 83.
Fetch the next digit (0) from the dividend, attach it to 83 and continue: 830 / 143

Advancing to step 4:
143 goes into 830 5 times with a remainder of 115.
Write down 5 as next digit of the result. 
Result so far: 35.0
Deduct 715 from 830 and we're left with 115.
Append the next digit (3) from the dividend to 115 and continue with: 1153 / 143

Step 5:
1153 divided by 143 is 8 with a remainder of 9.
Use 8 as the next digit of our solution. 
Result so far: 358.0
If we take 1144 away from 1153, we end up with 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 143

Step 6:
143 goes into 97 0 times with a remainder of 97.
The number 0 becomes the next digit in our result. 
Result so far: 3580.0
If we take 0 away from 97, we end up with 97.
Grab the next digit (3) from the dividend, add it to 97, then carry on: 973 / 143

On to step 7:
143 goes into 973 6 times with a remainder of 115.
The next digit of our result is 6. 
Result so far: 35806.0
Subtracting 858 from 973 leaves us with 115.
Include the next digit (3) from the dividend after 115, then repeat: 1153 / 143

Going ahead to step 8:
143 can be fit into 1153 8 times, resulting in a remainder of 9.
Record the quotient 8 as the next digit in the result. 
Result so far: 358068.0
The remainder is 9 after subtracting 1144 from 1153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 9:
143 goes into 90 0 times with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 358068.0
Subtracting 0 from 90 leaves us 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.

Advancing to step 10:
143 goes into 900 6 times with a remainder of 42.
Put 6 as the next digit of the answer. 
Result so far: 358068.06
Subtract 858 from 900 to 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.

Step 11:
When dividing 420 by 143, we get 2 with a remainder of 134.
Use 2 as the next digit of our solution. 
Result so far: 358068.062
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.

Advancing to step 12:
1340 divided by 143 is 9 with a remainder of 53.
The next digit of our result is 9. 
Result so far: 358068.0629
The remainder is 53 after subtracting 1287 from 1340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 13:
When dividing 530 by 143, we get 3 with a remainder of 101.
The number 3 becomes the next digit in our result. 
Result so far: 358068.06293
The remainder is 101 after subtracting 429 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Going ahead to step 14:
The number 143 fits into 1010 7 times, leaving a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 358068.062937
Deduct 1001 from 1010 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 15:
The number 143 fits into 90 0 times, leaving a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 358068.062937
Subtract 0 from 90 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 16:
If we divide 900 by 143, we get 6 and a remainder of 42.
The next digit of our result is 6. 
Result so far: 358068.06293706
Deduct 858 from 900 and we're left 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 outcome is 358068.06293706, with a leftover of 4.2e-08.