401919 ÷ 40 
We're looking to find how many times 40 goes into 401919.

On to step 1:
The number 40 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 40

Let's proceed to step 2:
When dividing 40 by 40, we get 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 40 from 40 and we're left with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 40

Going ahead to step 3:
If we divide 1 by 40, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 40

Let's proceed to step 4:
The number 40 fits into 19 0 times, leaving a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 100.0
If we subtract 0 from 19, we get 19.
Fetch the next digit (1) from the dividend, attach it to 19 and continue: 191 / 40

On to step 5:
When dividing 191 by 40, we get 4 with a remainder of 31.
Put 4 as the next digit of the answer. 
Result so far: 1004.0
If we subtract 160 from 191, we get 31.
Include the next digit (9) from the dividend after 31, then repeat: 319 / 40

Moving on to step 6:
When dividing 319 by 40, we get 7 with a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 10047.0
If we take 280 away from 319, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 7:
390 divided by 40 is 9 with a remainder of 30.
Put 9 as the next digit of the answer. 
Result so far: 10047.9
If we subtract 360 from 390, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
40 goes into 300 7 times with a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 10047.97
Subtract 280 from 300 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
The number 40 fits into 200 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 10047.975
Subtracting 200 from 200 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.

Step 10:
If we divide 0 by 40, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10047.975
The remainder is 0 after subtracting 0 from 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:
When dividing 0 by 40, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10047.975
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 10047.975 and a remainder of 0.0.