Let's divide 51486959 by 456
We want to figure out the number of times 51486959 can be divided by 456.

Step 1:
When dividing 5 by 456, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 456

Step 2:
456 goes into 51 0 times with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Append the next digit (4) from the dividend to 51 and continue with: 514 / 456

Step 3:
456 goes into 514 1 times with a remainder of 58.
The next digit of our result is 1. 
Result so far: 1.0
If we take 456 away from 514, we end up with 58.
Grab the next digit (8) from the dividend, add it to 58, then carry on: 588 / 456

On to step 4:
456 goes into 588 1 times with a remainder of 132.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
The remainder is 132 after subtracting 456 from 588.
Take the next digit (6) from the dividend and append it to 132, then repeat: 1326 / 456

Step 5:
1326 divided by 456 is 2 with a remainder of 414.
Put 2 as the next digit of the answer. 
Result so far: 112.0
The remainder is 414 after subtracting 912 from 1326.
Fetch the next digit (9) from the dividend, attach it to 414 and continue: 4149 / 456

Step 6:
If we divide 4149 by 456, we get 9 and a remainder of 45.
Write down 9 as next digit of the result. 
Result so far: 1129.0
If we take 4104 away from 4149, we end up with 45.
Include the next digit (5) from the dividend after 45, then repeat: 455 / 456

Going ahead to step 7:
When dividing 455 by 456, we get 0 with a remainder of 455.
Record the quotient 0 as the next digit in the result. 
Result so far: 11290.0
Subtract 0 from 455 to get 455.
Take the next digit (9) from the dividend and append it to 455, then repeat: 4559 / 456

Going ahead to step 8:
456 goes into 4559 9 times with a remainder of 455.
Use 9 as the next digit of our solution. 
Result so far: 112909.0
Subtracting 4104 from 4559 leaves us with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Let's proceed to step 9:
456 can be fit into 4550 9 times, resulting in a remainder of 446.
The next digit of our result is 9. 
Result so far: 112909.9
Deduct 4104 from 4550 and we're left with 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

On to step 10:
4460 divided by 456 is 9 with a remainder of 356.
The next digit of our result is 9. 
Result so far: 112909.99
If we take 4104 away from 4460, we end up with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

After the division, we end up with 112909.99 and a remainder of 0.356.