We're dividing 615870 by 18 
We're looking to find how many times 18 goes into 615870.

On to step 1:
The number 18 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 18

Advancing to step 2:
The number 18 fits into 61 3 times, leaving a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 7 after subtracting 54 from 61.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 18

Going ahead to step 3:
When dividing 75 by 18, we get 4 with a remainder of 3.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
If we subtract 72 from 75, we get 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 18

Advancing to step 4:
18 can be fit into 38 2 times, resulting in a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 342.0
Subtracting 36 from 38 leaves us with 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 18

Advancing to step 5:
The number 18 fits into 27 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 3421.0
If we take 18 away from 27, we end up with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 18

Going ahead to step 6:
When dividing 90 by 18, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 34215.0
Deduct 90 from 90 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
If we divide 0 by 18, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 34215.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
When dividing 0 by 18, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 34215.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 34215.0, with a leftover of 0.0.