We divide 621734 by 15
Our goal is to divide 621734 by 15.

Going ahead to step 1:
6 divided by 15 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 15

On to step 2:
62 divided by 15 is 4 with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 60 from 62 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 15

Step 3:
15 can be fit into 21 1 times, resulting in a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 41.0
Subtracting 15 from 21 leaves us with 6.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 15

Let's proceed to step 4:
If we divide 67 by 15, we get 4 and a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 414.0
Subtract 60 from 67 to get 7.
Bring next digit (3) of the dividend behind the 7 and repeat the process: 73 / 15

On to step 5:
When dividing 73 by 15, we get 4 with a remainder of 13.
Use 4 as the next digit of our solution. 
Result so far: 4144.0
The remainder is 13 after subtracting 60 from 73.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 15

Step 6:
15 can be fit into 134 8 times, resulting in a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 41448.0
Subtracting 120 from 134 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
If we divide 140 by 15, we get 9 and a remainder of 5.
The next digit of our result is 9. 
Result so far: 41448.9
If we subtract 135 from 140, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 8:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 41448.93
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 9:
15 goes into 50 3 times with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 41448.933
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The quotient of the division is 41448.933, and the remainder is 0.0005.