We look at the division of 870946 by 17 
We want to figure out the number of times 870946 can be divided by 17.

On to step 1:
If we divide 8 by 17, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 17

Step 2:
If we divide 87 by 17, we get 5 and a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 85 from 87 leaves us with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 17

Moving on to step 3:
If we divide 20 by 17, we get 1 and a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 51.0
Deduct 17 from 20 and we're left with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 17

Moving on to step 4:
If we divide 39 by 17, we get 2 and a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 512.0
Subtract 34 from 39 to get 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 17

Advancing to step 5:
The number 17 fits into 54 3 times, leaving a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 5123.0
If we subtract 51 from 54, we get 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 17

On to step 6:
If we divide 36 by 17, we get 2 and a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 51232.0
Subtracting 34 from 36 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
20 divided by 17 is 1 with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 51232.1
Deduct 17 from 20 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 8:
17 can be fit into 30 1 times, resulting in a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 51232.11
The remainder is 13 after subtracting 17 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

In conclusion, the division gives 51232.11 with a balance of 0.013.