We're dividing 870472 by 3 
We want to figure out the number of times 870472 can be divided by 3.

Step 1:
3 goes into 8 2 times with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 6 from 8 leaves us with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 3

Moving on to step 2:
When dividing 27 by 3, we get 9 with a remainder of 0.
The next digit of our result is 9. 
Result so far: 29.0
The remainder is 0 after subtracting 27 from 27.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 3

Going ahead to step 3:
If we divide 0 by 3, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 290.0
Subtracting 0 from 0 leaves us with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 3

Moving on to step 4:
4 divided by 3 is 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 2901.0
Deduct 3 from 4 and we're left with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 3

Moving on to step 5:
3 goes into 17 5 times with a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 29015.0
If we subtract 15 from 17, we get 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 3

Moving on to step 6:
If we divide 22 by 3, we get 7 and a remainder of 1.
The next digit of our result is 7. 
Result so far: 290157.0
If we subtract 21 from 22, we 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.

Step 7:
When dividing 10 by 3, we get 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 290157.3
If we subtract 9 from 10, we 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.

Moving on to step 8:
If we divide 10 by 3, we get 3 and a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 290157.33
Subtracting 9 from 10 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.

The quotient of the division is 290157.33, and the remainder is 0.001.