51360371 ÷ 87 
Our goal is to divide 51360371 by 87.

On to step 1:
When dividing 5 by 87, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 87

Going ahead to step 2:
51 divided by 87 is 0 with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Bring next digit (3) of the dividend behind the 51 and repeat the process: 513 / 87

Advancing to step 3:
The number 87 fits into 513 5 times, leaving a remainder of 78.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 78 after subtracting 435 from 513.
Fetch the next digit (6) from the dividend, attach it to 78 and continue: 786 / 87

Going ahead to step 4:
87 goes into 786 9 times with a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 59.0
Deduct 783 from 786 and we're left with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 87

Let's proceed to step 5:
87 can be fit into 30 0 times, resulting in a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 590.0
The remainder is 30 after subtracting 0 from 30.
Fetch the next digit (3) from the dividend, attach it to 30 and continue: 303 / 87

Step 6:
303 divided by 87 is 3 with a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 5903.0
If we take 261 away from 303, we end up with 42.
Bring next digit (7) of the dividend behind the 42 and repeat the process: 427 / 87

On to step 7:
427 divided by 87 is 4 with a remainder of 79.
Record the quotient 4 as the next digit in the result. 
Result so far: 59034.0
Deduct 348 from 427 and we're left with 79.
Bring next digit (1) of the dividend behind the 79 and repeat the process: 791 / 87

Advancing to step 8:
The number 87 fits into 791 9 times, leaving a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 590349.0
Subtracting 783 from 791 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
The number 87 fits into 80 0 times, leaving a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 590349.0
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 10:
The number 87 fits into 800 9 times, leaving a remainder of 17.
Write down 9 as next digit of the result. 
Result so far: 590349.09
Subtract 783 from 800 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 11:
If we divide 170 by 87, we get 1 and a remainder of 83.
The number 1 becomes the next digit in our result. 
Result so far: 590349.091
Subtract 87 from 170 to get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

On to step 12:
If we divide 830 by 87, we get 9 and a remainder of 47.
Put 9 as the next digit of the answer. 
Result so far: 590349.0919
If we subtract 783 from 830, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 13:
When dividing 470 by 87, we get 5 with a remainder of 35.
The next digit of our result is 5. 
Result so far: 590349.09195
Deduct 435 from 470 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 14:
87 can be fit into 350 4 times, resulting in a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 590349.091954
Deduct 348 from 350 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 15:
When dividing 20 by 87, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 590349.091954
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 16:
87 goes into 200 2 times with a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 590349.09195402
If we subtract 174 from 200, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Our division results in 590349.09195402 with a remaining 2.6e-08.