Let's divide 840301 by 15
Let's see how many times 15 fits into 840301.

On to step 1:
15 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 15

Advancing to step 2:
84 divided by 15 is 5 with a remainder of 9.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 75 from 84 and we're left with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 15

Step 3:
If we divide 90 by 15, we get 6 and a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 56.0
If we take 90 away from 90, we end up with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 15

Moving on to step 4:
15 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 560.0
If we take 0 away from 3, we end up with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 15

Going ahead to step 5:
15 goes into 30 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 5602.0
If we take 30 away from 30, we end up with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 15

On to step 6:
The number 15 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 56020.0
Subtracting 0 from 1 leaves us 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 15 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 56020.0
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.

Let's proceed to step 8:
100 divided by 15 is 6 with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 56020.06
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
When dividing 100 by 15, we get 6 with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 56020.066
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.

The quotient of the division is 56020.066, and the remainder is 0.001.