988429 ÷ 40 
We're looking to find how many times 40 goes into 988429.

On to step 1:
40 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
If we take 0 away from 9, we end up with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 40

Let's proceed to step 2:
98 divided by 40 is 2 with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 80 from 98 and we're left with 18.
Include the next digit (8) from the dividend after 18, then repeat: 188 / 40

Moving on to step 3:
The number 40 fits into 188 4 times, leaving a remainder of 28.
The next digit of our result is 4. 
Result so far: 24.0
Subtracting 160 from 188 leaves us with 28.
Append the next digit (4) from the dividend to 28 and continue with: 284 / 40

Moving on to step 4:
The number 40 fits into 284 7 times, leaving a remainder of 4.
The next digit of our result is 7. 
Result so far: 247.0
Deduct 280 from 284 and we're left with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 40

Step 5:
40 goes into 42 1 times with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 2471.0
Subtract 40 from 42 to get 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 40

Step 6:
When dividing 29 by 40, we get 0 with a remainder of 29.
Use 0 as the next digit of our solution. 
Result so far: 24710.0
If we subtract 0 from 29, we 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 7:
The number 40 fits into 290 7 times, leaving a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 24710.7
If we subtract 280 from 290, 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:
When dividing 100 by 40, we get 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 24710.72
Subtracting 80 from 100 leaves us 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.

Advancing to step 9:
When dividing 200 by 40, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 24710.725
The remainder is 0 after subtracting 200 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
40 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 24710.725
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.

Moving on to step 11:
40 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 24710.725
Subtracting 0 from 0 leaves us 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.

After the division, we end up with 24710.725 and a remainder of 0.0.