We look at the division of 51129142 by 299 
Our goal is to divide 51129142 by 299.

Moving on to step 1:
If we divide 5 by 299, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 299

On to step 2:
When dividing 51 by 299, we get 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Include the next digit (1) from the dividend after 51, then repeat: 511 / 299

Let's proceed to step 3:
299 goes into 511 1 times with a remainder of 212.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 299 away from 511, we end up with 212.
Grab the next digit (2) from the dividend, add it to 212, then carry on: 2122 / 299

Advancing to step 4:
The number 299 fits into 2122 7 times, leaving a remainder of 29.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we take 2093 away from 2122, we end up with 29.
Take the next digit (9) from the dividend and append it to 29, then repeat: 299 / 299

Step 5:
The number 299 fits into 299 1 times, leaving a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 171.0
The remainder is 0 after subtracting 299 from 299.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 299

Let's proceed to step 6:
When dividing 1 by 299, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 1710.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 299

On to step 7:
When dividing 14 by 299, we get 0 with a remainder of 14.
The next digit of our result is 0. 
Result so far: 17100.0
If we take 0 away from 14, we end up with 14.
Bring next digit (2) of the dividend behind the 14 and repeat the process: 142 / 299

Advancing to step 8:
The number 299 fits into 142 0 times, leaving a remainder of 142.
The number 0 becomes the next digit in our result. 
Result so far: 171000.0
If we subtract 0 from 142, we get 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Advancing to step 9:
299 goes into 1420 4 times with a remainder of 224.
Write down 4 as next digit of the result. 
Result so far: 171000.4
Deduct 1196 from 1420 and we're left with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Advancing to step 10:
299 can be fit into 2240 7 times, resulting in a remainder of 147.
Put 7 as the next digit of the answer. 
Result so far: 171000.47
If we subtract 2093 from 2240, we get 147.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1470, and continue the process.

Step 11:
299 can be fit into 1470 4 times, resulting in a remainder of 274.
Write down 4 as next digit of the result. 
Result so far: 171000.474
Subtracting 1196 from 1470 leaves us with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Advancing to step 12:
299 can be fit into 2740 9 times, resulting in a remainder of 49.
Put 9 as the next digit of the answer. 
Result so far: 171000.4749
Subtract 2691 from 2740 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 13:
299 can be fit into 490 1 times, resulting in a remainder of 191.
The number 1 becomes the next digit in our result. 
Result so far: 171000.47491
Deduct 299 from 490 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Step 14:
If we divide 1910 by 299, we get 6 and a remainder of 116.
Use 6 as the next digit of our solution. 
Result so far: 171000.474916
Subtracting 1794 from 1910 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 15:
If we divide 1160 by 299, we get 3 and a remainder of 263.
Use 3 as the next digit of our solution. 
Result so far: 171000.4749163
Deduct 897 from 1160 and we're left with 263.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2630, and continue the process.

On to step 16:
299 can be fit into 2630 8 times, resulting in a remainder of 238.
The number 8 becomes the next digit in our result. 
Result so far: 171000.47491638
The remainder is 238 after subtracting 2392 from 2630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

After the division, we end up with 171000.47491638 and a remainder of 2.38e-07.