Let's divide 491542 by 3
We want to figure out the number of times 491542 can be divided by 3.

Going ahead to step 1:
3 can be fit into 4 1 times, resulting in a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 3 away from 4, we end up with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 3

Let's proceed to step 2:
3 can be fit into 19 6 times, resulting in a remainder of 1.
The next digit of our result is 6. 
Result so far: 16.0
Subtract 18 from 19 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 3

Advancing to step 3:
The number 3 fits into 11 3 times, leaving a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 163.0
If we subtract 9 from 11, we get 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 3

On to step 4:
3 goes into 25 8 times with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 1638.0
If we take 24 away from 25, we end up with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 3

On to step 5:
14 divided by 3 is 4 with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 16384.0
Deduct 12 from 14 and we're left with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 3

Step 6:
The number 3 fits into 22 7 times, leaving a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 163847.0
Deduct 21 from 22 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.

Step 7:
10 divided by 3 is 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 163847.3
Subtract 9 from 10 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
3 goes into 10 3 times with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 163847.33
Subtract 9 from 10 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 163847.33, and the remainder is 0.001.