684387 divided by 40 
We want to divide 684387 by 40.

Advancing to step 1:
If we divide 6 by 40, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 40

Going ahead to step 2:
If we divide 68 by 40, we get 1 and a remainder of 28.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 28 after subtracting 40 from 68.
Append the next digit (4) from the dividend to 28 and continue with: 284 / 40

Step 3:
When dividing 284 by 40, we get 7 with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Subtracting 280 from 284 leaves us with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 40

Step 4:
If we divide 43 by 40, we get 1 and a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 171.0
Deduct 40 from 43 and we're left with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 40

Advancing to step 5:
38 divided by 40 is 0 with a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 1710.0
If we take 0 away from 38, we end up with 38.
Bring next digit (7) of the dividend behind the 38 and repeat the process: 387 / 40

Advancing to step 6:
40 can be fit into 387 9 times, resulting in a remainder of 27.
The next digit of our result is 9. 
Result so far: 17109.0
Subtract 360 from 387 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 7:
40 goes into 270 6 times with a remainder of 30.
Write down 6 as next digit of the result. 
Result so far: 17109.6
The remainder is 30 after subtracting 240 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
300 divided by 40 is 7 with a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 17109.67
Subtracting 280 from 300 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.

Let's proceed to step 9:
The number 40 fits into 200 5 times, leaving a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 17109.675
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.

Advancing to step 10:
When dividing 0 by 40, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 17109.675
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.

On 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: 17109.675
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.

The quotient of the division is 17109.675, and the remainder is 0.0.