Let's divide 9978 by 51
We want to figure out the number of times 9978 can be divided by 51.

Let's proceed to step 1:
9 divided by 51 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 51

Let's proceed to step 2:
The number 51 fits into 99 1 times, leaving a remainder of 48.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 51 from 99 and we're left with 48.
Fetch the next digit (7) from the dividend, attach it to 48 and continue: 487 / 51

Moving on to step 3:
51 can be fit into 487 9 times, resulting in a remainder of 28.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
If we subtract 459 from 487, we get 28.
Grab the next digit (8) from the dividend, add it to 28, then carry on: 288 / 51

Moving on to step 4:
288 divided by 51 is 5 with a remainder of 33.
Record the quotient 5 as the next digit in the result. 
Result so far: 195.0
If we take 255 away from 288, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 5:
When dividing 330 by 51, we get 6 with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 195.6
Deduct 306 from 330 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 6:
The number 51 fits into 240 4 times, leaving a remainder of 36.
The number 4 becomes the next digit in our result. 
Result so far: 195.64
Subtract 204 from 240 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 7:
51 goes into 360 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 195.647
If we take 357 away from 360, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 8:
The number 51 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 195.647
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 9:
51 goes into 300 5 times with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 195.64705
Subtract 255 from 300 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 10:
The number 51 fits into 450 8 times, leaving a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 195.647058
Subtract 408 from 450 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 11:
51 goes into 420 8 times with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 195.6470588
If we take 408 away from 420, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 195.6470588, with a leftover of 1.2e-07.