51587297 ÷ 684 
We want to figure out the number of times 51587297 can be divided by 684.

Let's proceed to step 1:
684 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 684

Going ahead to step 2:
When dividing 51 by 684, we get 0 with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Include the next digit (5) from the dividend after 51, then repeat: 515 / 684

Let's proceed to step 3:
515 divided by 684 is 0 with a remainder of 515.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 515 to get 515.
Take the next digit (8) from the dividend and append it to 515, then repeat: 5158 / 684

Advancing to step 4:
When dividing 5158 by 684, we get 7 with a remainder of 370.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 4788 from 5158 leaves us with 370.
Grab the next digit (7) from the dividend, add it to 370, then carry on: 3707 / 684

Let's proceed to step 5:
684 goes into 3707 5 times with a remainder of 287.
Record the quotient 5 as the next digit in the result. 
Result so far: 75.0
If we subtract 3420 from 3707, we get 287.
Include the next digit (2) from the dividend after 287, then repeat: 2872 / 684

On to step 6:
The number 684 fits into 2872 4 times, leaving a remainder of 136.
Write down 4 as next digit of the result. 
Result so far: 754.0
Deduct 2736 from 2872 and we're left with 136.
Append the next digit (9) from the dividend to 136 and continue with: 1369 / 684

Advancing to step 7:
If we divide 1369 by 684, we get 2 and a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 7542.0
The remainder is 1 after subtracting 1368 from 1369.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 684

Advancing to step 8:
17 divided by 684 is 0 with a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 75420.0
If we take 0 away from 17, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 9:
684 can be fit into 170 0 times, resulting in a remainder of 170.
Put 0 as the next digit of the answer. 
Result so far: 75420.0
If we take 0 away from 170, we end up with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 10:
The number 684 fits into 1700 2 times, leaving a remainder of 332.
Record the quotient 2 as the next digit in the result. 
Result so far: 75420.02
If we take 1368 away from 1700, we end up with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Advancing to step 11:
If we divide 3320 by 684, we get 4 and a remainder of 584.
Put 4 as the next digit of the answer. 
Result so far: 75420.024
Subtracting 2736 from 3320 leaves us with 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Moving on to step 12:
684 goes into 5840 8 times with a remainder of 368.
Write down 8 as next digit of the result. 
Result so far: 75420.0248
If we subtract 5472 from 5840, we get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Let's proceed to step 13:
3680 divided by 684 is 5 with a remainder of 260.
Put 5 as the next digit of the answer. 
Result so far: 75420.02485
If we subtract 3420 from 3680, we get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

On to step 14:
When dividing 2600 by 684, we get 3 with a remainder of 548.
The next digit of our result is 3. 
Result so far: 75420.024853
The remainder is 548 after subtracting 2052 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

Going ahead to step 15:
If we divide 5480 by 684, we get 8 and a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 75420.0248538
Subtract 5472 from 5480 to get 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 16:
80 divided by 684 is 0 with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 75420.0248538
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 75420.0248538, with a leftover of 8e-08.