641740 divided by 15 
Let's see how many times 15 fits into 641740.

Step 1:
If we divide 6 by 15, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 15

Advancing to step 2:
15 can be fit into 64 4 times, resulting in a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 4 after subtracting 60 from 64.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 15

On to step 3:
If we divide 41 by 15, we get 2 and a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Deduct 30 from 41 and we're left with 11.
Fetch the next digit (7) from the dividend, attach it to 11 and continue: 117 / 15

Moving on to step 4:
When dividing 117 by 15, we get 7 with a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 427.0
The remainder is 12 after subtracting 105 from 117.
Take the next digit (4) from the dividend and append it to 12, then repeat: 124 / 15

Moving on to step 5:
When dividing 124 by 15, we get 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 4278.0
Subtracting 120 from 124 leaves us with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 15

Let's proceed to step 6:
15 can be fit into 40 2 times, resulting in a remainder of 10.
The next digit of our result is 2. 
Result so far: 42782.0
The remainder is 10 after subtracting 30 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 7:
15 can be fit into 100 6 times, resulting in a remainder of 10.
The next digit of our result is 6. 
Result so far: 42782.6
If we take 90 away from 100, 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.

Going ahead to step 8:
When dividing 100 by 15, we get 6 with a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 42782.66
Deduct 90 from 100 and we're left 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.

The quotient of the division is 42782.66, and the remainder is 0.01.