978636 ÷ 51 
We're looking to find how many times 51 goes into 978636.

On to step 1:
51 can be fit into 9 0 times, resulting in a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 51

On to step 2:
When dividing 97 by 51, we get 1 with a remainder of 46.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 51 from 97, we get 46.
Bring next digit (8) of the dividend behind the 46 and repeat the process: 468 / 51

On to step 3:
468 divided by 51 is 9 with a remainder of 9.
The next digit of our result is 9. 
Result so far: 19.0
If we take 459 away from 468, we end up with 9.
Bring next digit (6) of the dividend behind the 9 and repeat the process: 96 / 51

Let's proceed to step 4:
51 goes into 96 1 times with a remainder of 45.
Write down 1 as next digit of the result. 
Result so far: 191.0
Deduct 51 from 96 and we're left with 45.
Grab the next digit (3) from the dividend, add it to 45, then carry on: 453 / 51

Let's proceed to step 5:
If we divide 453 by 51, we get 8 and a remainder of 45.
The number 8 becomes the next digit in our result. 
Result so far: 1918.0
If we subtract 408 from 453, we get 45.
Take the next digit (6) from the dividend and append it to 45, then repeat: 456 / 51

Let's proceed to step 6:
51 goes into 456 8 times with a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 19188.0
The remainder is 48 after subtracting 408 from 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 7:
When dividing 480 by 51, we get 9 with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 19188.9
Deduct 459 from 480 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 8:
If we divide 210 by 51, we get 4 and a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 19188.94
If we subtract 204 from 210, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
51 goes into 60 1 times with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 19188.941
Subtract 51 from 60 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 10:
51 can be fit into 90 1 times, resulting in a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 19188.9411
The remainder is 39 after subtracting 51 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Our division results in 19188.9411 with a remaining 0.00039.