We're dividing 998921 by 40 
We want to figure out the number of times 998921 can be divided by 40.

Moving on to step 1:
When dividing 9 by 40, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 40

Going ahead to step 2:
99 divided by 40 is 2 with a remainder of 19.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 19 after subtracting 80 from 99.
Grab the next digit (8) from the dividend, add it to 19, then carry on: 198 / 40

Advancing to step 3:
If we divide 198 by 40, we get 4 and a remainder of 38.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Deduct 160 from 198 and we're left with 38.
Append the next digit (9) from the dividend to 38 and continue with: 389 / 40

Moving on to step 4:
When dividing 389 by 40, we get 9 with a remainder of 29.
The next digit of our result is 9. 
Result so far: 249.0
If we subtract 360 from 389, we get 29.
Take the next digit (2) from the dividend and append it to 29, then repeat: 292 / 40

Moving on to step 5:
40 can be fit into 292 7 times, resulting in a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 2497.0
Deduct 280 from 292 and we're left with 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 40

Advancing to step 6:
When dividing 121 by 40, we get 3 with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 24973.0
Subtracting 120 from 121 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
The number 40 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 24973.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
40 goes into 100 2 times with a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 24973.02
If we take 80 away from 100, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
If we divide 200 by 40, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 24973.025
Deduct 200 from 200 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
40 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 24973.025
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
40 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 24973.025
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 24973.025, and the remainder is 0.0.