Let's divide 743459 by 40
Our goal is to divide 743459 by 40.

Moving on to step 1:
40 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (4) from the dividend, attach it to 7 and continue: 74 / 40

Step 2:
If we divide 74 by 40, we get 1 and a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 40 from 74, we get 34.
Fetch the next digit (3) from the dividend, attach it to 34 and continue: 343 / 40

Step 3:
When dividing 343 by 40, we get 8 with a remainder of 23.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Deduct 320 from 343 and we're left with 23.
Include the next digit (4) from the dividend after 23, then repeat: 234 / 40

Let's proceed to step 4:
When dividing 234 by 40, we get 5 with a remainder of 34.
The next digit of our result is 5. 
Result so far: 185.0
If we subtract 200 from 234, we get 34.
Include the next digit (5) from the dividend after 34, then repeat: 345 / 40

Going ahead to step 5:
When dividing 345 by 40, we get 8 with a remainder of 25.
The number 8 becomes the next digit in our result. 
Result so far: 1858.0
Subtracting 320 from 345 leaves us with 25.
Bring next digit (9) of the dividend behind the 25 and repeat the process: 259 / 40

Step 6:
If we divide 259 by 40, we get 6 and a remainder of 19.
The number 6 becomes the next digit in our result. 
Result so far: 18586.0
Subtracting 240 from 259 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 7:
40 can be fit into 190 4 times, resulting in a remainder of 30.
The number 4 becomes the next digit in our result. 
Result so far: 18586.4
Deduct 160 from 190 and we're left 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.

Let's proceed to step 8:
40 can be fit into 300 7 times, resulting in a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 18586.47
Deduct 280 from 300 and we're left 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.
The number 5 becomes the next digit in our result. 
Result so far: 18586.475
Subtract 200 from 200 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.

On to step 10:
When dividing 0 by 40, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 18586.475
Deduct 0 from 0 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 11:
If we divide 0 by 40, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 18586.475
Deduct 0 from 0 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.

After the division, we end up with 18586.475 and a remainder of 0.0.