Let's divide 861511 by 70
Our goal is to divide 861511 by 70.

Going ahead to step 1:
If we divide 8 by 70, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 70

Moving on to step 2:
70 can be fit into 86 1 times, resulting in a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 70 from 86 leaves us with 16.
Include the next digit (1) from the dividend after 16, then repeat: 161 / 70

Let's proceed to step 3:
70 can be fit into 161 2 times, resulting in a remainder of 21.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtract 140 from 161 to get 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 70

Moving on to step 4:
215 divided by 70 is 3 with a remainder of 5.
The next digit of our result is 3. 
Result so far: 123.0
Subtracting 210 from 215 leaves us with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 70

Let's proceed to step 5:
When dividing 51 by 70, we get 0 with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 1230.0
If we take 0 away from 51, we end up with 51.
Include the next digit (1) from the dividend after 51, then repeat: 511 / 70

Advancing to step 6:
70 goes into 511 7 times with a remainder of 21.
Record the quotient 7 as the next digit in the result. 
Result so far: 12307.0
If we take 490 away from 511, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 7:
210 divided by 70 is 3 with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 12307.3
Subtract 210 from 210 to get 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:
70 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12307.3
If we take 0 away from 0, we end up 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.

Advancing to step 9:
If we divide 0 by 70, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 12307.3
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 result is 12307.3 with a remainder of 0.0.