We divide 621641 by 40
Let's see how many times 40 fits into 621641.

Advancing to step 1:
The number 40 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 40

Step 2:
If we divide 62 by 40, we get 1 and a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 40 from 62, we get 22.
Take the next digit (1) from the dividend and append it to 22, then repeat: 221 / 40

Moving on to step 3:
The number 40 fits into 221 5 times, leaving a remainder of 21.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Deduct 200 from 221 and we're left with 21.
Include the next digit (6) from the dividend after 21, then repeat: 216 / 40

Moving on to step 4:
When dividing 216 by 40, we get 5 with a remainder of 16.
Use 5 as the next digit of our solution. 
Result so far: 155.0
Subtract 200 from 216 to get 16.
Fetch the next digit (4) from the dividend, attach it to 16 and continue: 164 / 40

Advancing to step 5:
If we divide 164 by 40, we get 4 and a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 1554.0
The remainder is 4 after subtracting 160 from 164.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 40

Moving on to step 6:
40 goes into 41 1 times with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 15541.0
Deduct 40 from 41 and we're left 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.

On to step 7:
The number 40 fits into 10 0 times, leaving a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 15541.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
The number 40 fits into 100 2 times, leaving a remainder of 20.
The next digit of our result is 2. 
Result so far: 15541.02
Subtract 80 from 100 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.

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: 15541.025
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.

Let's proceed to step 10:
The number 40 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 15541.025
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.

Moving on to step 11:
The number 40 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 15541.025
If we subtract 0 from 0, we 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 15541.025, and the remainder is 0.0.