51800129 ÷ 371 
Our goal is to divide 51800129 by 371.

Going ahead to step 1:
5 divided by 371 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 371

Let's proceed to step 2:
371 can be fit into 51 0 times, resulting in a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Take the next digit (8) from the dividend and append it to 51, then repeat: 518 / 371

Let's proceed to step 3:
The number 371 fits into 518 1 times, leaving a remainder of 147.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 371 from 518, we get 147.
Bring next digit (0) of the dividend behind the 147 and repeat the process: 1470 / 371

Moving on to step 4:
1470 divided by 371 is 3 with a remainder of 357.
The next digit of our result is 3. 
Result so far: 13.0
If we subtract 1113 from 1470, we get 357.
Fetch the next digit (0) from the dividend, attach it to 357 and continue: 3570 / 371

Moving on to step 5:
If we divide 3570 by 371, we get 9 and a remainder of 231.
Put 9 as the next digit of the answer. 
Result so far: 139.0
The remainder is 231 after subtracting 3339 from 3570.
Take the next digit (1) from the dividend and append it to 231, then repeat: 2311 / 371

Going ahead to step 6:
371 can be fit into 2311 6 times, resulting in a remainder of 85.
Record the quotient 6 as the next digit in the result. 
Result so far: 1396.0
If we take 2226 away from 2311, we end up with 85.
Take the next digit (2) from the dividend and append it to 85, then repeat: 852 / 371

Let's proceed to step 7:
The number 371 fits into 852 2 times, leaving a remainder of 110.
Use 2 as the next digit of our solution. 
Result so far: 13962.0
Subtract 742 from 852 to get 110.
Include the next digit (9) from the dividend after 110, then repeat: 1109 / 371

Let's proceed to step 8:
The number 371 fits into 1109 2 times, leaving a remainder of 367.
Record the quotient 2 as the next digit in the result. 
Result so far: 139622.0
Subtracting 742 from 1109 leaves us with 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Step 9:
The number 371 fits into 3670 9 times, leaving a remainder of 331.
Use 9 as the next digit of our solution. 
Result so far: 139622.9
If we subtract 3339 from 3670, we get 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

Step 10:
If we divide 3310 by 371, we get 8 and a remainder of 342.
The number 8 becomes the next digit in our result. 
Result so far: 139622.98
If we subtract 2968 from 3310, we get 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Let's proceed to step 11:
If we divide 3420 by 371, we get 9 and a remainder of 81.
The number 9 becomes the next digit in our result. 
Result so far: 139622.989
If we subtract 3339 from 3420, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 12:
371 goes into 810 2 times with a remainder of 68.
The number 2 becomes the next digit in our result. 
Result so far: 139622.9892
If we subtract 742 from 810, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 13:
371 can be fit into 680 1 times, resulting in a remainder of 309.
The number 1 becomes the next digit in our result. 
Result so far: 139622.98921
If we take 371 away from 680, we end up with 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Advancing to step 14:
371 can be fit into 3090 8 times, resulting in a remainder of 122.
The next digit of our result is 8. 
Result so far: 139622.989218
If we subtract 2968 from 3090, we get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

On to step 15:
The number 371 fits into 1220 3 times, leaving a remainder of 107.
Put 3 as the next digit of the answer. 
Result so far: 139622.9892183
Subtract 1113 from 1220 to get 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 16:
The number 371 fits into 1070 2 times, leaving a remainder of 328.
The next digit of our result is 2. 
Result so far: 139622.98921832
Deduct 742 from 1070 and we're left with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

The quotient of the division is 139622.98921832, and the remainder is 3.28e-07.