998780 ÷ 51 
Our goal is to divide 998780 by 51.

Going ahead to step 1:
51 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 51

Moving on to step 2:
99 divided by 51 is 1 with a remainder of 48.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 51 from 99, we get 48.
Bring next digit (8) of the dividend behind the 48 and repeat the process: 488 / 51

Advancing to step 3:
51 goes into 488 9 times with a remainder of 29.
The next digit of our result is 9. 
Result so far: 19.0
Subtracting 459 from 488 leaves us with 29.
Bring next digit (7) of the dividend behind the 29 and repeat the process: 297 / 51

Advancing to step 4:
When dividing 297 by 51, we get 5 with a remainder of 42.
Put 5 as the next digit of the answer. 
Result so far: 195.0
If we subtract 255 from 297, we get 42.
Append the next digit (8) from the dividend to 42 and continue with: 428 / 51

Moving on to step 5:
If we divide 428 by 51, we get 8 and a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 1958.0
If we subtract 408 from 428, we get 20.
Grab the next digit (0) from the dividend, add it to 20, then carry on: 200 / 51

Going ahead to step 6:
When dividing 200 by 51, we get 3 with a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 19583.0
Subtracting 153 from 200 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 7:
The number 51 fits into 470 9 times, leaving a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 19583.9
If we take 459 away from 470, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 8:
51 goes into 110 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 19583.92
Subtracting 102 from 110 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
When dividing 80 by 51, we get 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 19583.921
Subtract 51 from 80 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 10:
When dividing 290 by 51, we get 5 with a remainder of 35.
The next digit of our result is 5. 
Result so far: 19583.9215
The remainder is 35 after subtracting 255 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 11:
If we divide 350 by 51, we get 6 and a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 19583.92156
Subtract 306 from 350 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 12:
When dividing 440 by 51, we get 8 with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 19583.921568
The remainder is 32 after subtracting 408 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 13:
When dividing 320 by 51, we get 6 with a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 19583.9215686
Subtract 306 from 320 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 14:
When dividing 140 by 51, we get 2 with a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 19583.92156862
Subtracting 102 from 140 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final result is 19583.92156862 with a remainder of 3.8e-08.