We look at the division of 870230 by 45 
Our goal is to divide 870230 by 45.

Going ahead to step 1:
The number 45 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 45

Advancing to step 2:
45 can be fit into 87 1 times, resulting in a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 45 from 87 and we're left with 42.
Include the next digit (0) from the dividend after 42, then repeat: 420 / 45

Moving on to step 3:
If we divide 420 by 45, we get 9 and a remainder of 15.
The next digit of our result is 9. 
Result so far: 19.0
Deduct 405 from 420 and we're left with 15.
Grab the next digit (2) from the dividend, add it to 15, then carry on: 152 / 45

Moving on to step 4:
The number 45 fits into 152 3 times, leaving a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 193.0
The remainder is 17 after subtracting 135 from 152.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 45

Moving on to step 5:
The number 45 fits into 173 3 times, leaving a remainder of 38.
The next digit of our result is 3. 
Result so far: 1933.0
Subtract 135 from 173 to get 38.
Append the next digit (0) from the dividend to 38 and continue with: 380 / 45

Going ahead to step 6:
380 divided by 45 is 8 with a remainder of 20.
The next digit of our result is 8. 
Result so far: 19338.0
The remainder is 20 after subtracting 360 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
45 can be fit into 200 4 times, resulting in a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 19338.4
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
When dividing 200 by 45, we get 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 19338.44
Subtracting 180 from 200 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 19338.44 with a balance of 0.02.