51207515 divided by 654 
We're looking to find how many times 654 goes into 51207515.

Moving on to step 1:
654 can be fit into 5 0 times, resulting in 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.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 654

Step 2:
When dividing 51 by 654, we get 0 with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Take the next digit (2) from the dividend and append it to 51, then repeat: 512 / 654

Advancing to step 3:
512 divided by 654 is 0 with a remainder of 512.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 512, we get 512.
Take the next digit (0) from the dividend and append it to 512, then repeat: 5120 / 654

Moving on to step 4:
When dividing 5120 by 654, we get 7 with a remainder of 542.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 542 after subtracting 4578 from 5120.
Grab the next digit (7) from the dividend, add it to 542, then carry on: 5427 / 654

On to step 5:
If we divide 5427 by 654, we get 8 and a remainder of 195.
The next digit of our result is 8. 
Result so far: 78.0
If we take 5232 away from 5427, we end up with 195.
Append the next digit (5) from the dividend to 195 and continue with: 1955 / 654

Going ahead to step 6:
When dividing 1955 by 654, we get 2 with a remainder of 647.
Put 2 as the next digit of the answer. 
Result so far: 782.0
Deduct 1308 from 1955 and we're left with 647.
Take the next digit (1) from the dividend and append it to 647, then repeat: 6471 / 654

Moving on to step 7:
The number 654 fits into 6471 9 times, leaving a remainder of 585.
Record the quotient 9 as the next digit in the result. 
Result so far: 7829.0
If we take 5886 away from 6471, we end up with 585.
Grab the next digit (5) from the dividend, add it to 585, then carry on: 5855 / 654

Advancing to step 8:
654 can be fit into 5855 8 times, resulting in a remainder of 623.
Use 8 as the next digit of our solution. 
Result so far: 78298.0
Subtracting 5232 from 5855 leaves us with 623.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6230, and continue the process.

On to step 9:
654 can be fit into 6230 9 times, resulting in a remainder of 344.
Use 9 as the next digit of our solution. 
Result so far: 78298.9
Deduct 5886 from 6230 and we're left with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Step 10:
When dividing 3440 by 654, we get 5 with a remainder of 170.
Write down 5 as next digit of the result. 
Result so far: 78298.95
If we subtract 3270 from 3440, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Advancing to step 11:
When dividing 1700 by 654, we get 2 with a remainder of 392.
Put 2 as the next digit of the answer. 
Result so far: 78298.952
If we take 1308 away from 1700, we end up with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Advancing to step 12:
3920 divided by 654 is 5 with a remainder of 650.
Use 5 as the next digit of our solution. 
Result so far: 78298.9525
Subtract 3270 from 3920 to get 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Step 13:
654 can be fit into 6500 9 times, resulting in a remainder of 614.
Record the quotient 9 as the next digit in the result. 
Result so far: 78298.95259
If we take 5886 away from 6500, we end up with 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Going ahead to step 14:
654 can be fit into 6140 9 times, resulting in a remainder of 254.
Record the quotient 9 as the next digit in the result. 
Result so far: 78298.952599
Deduct 5886 from 6140 and we're left with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

The final outcome is 78298.952599, with a leftover of 2.54e-05.