We look at the division of 870488 by 71 
Our goal is to divide 870488 by 71.

On to step 1:
The number 71 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 71

On to step 2:
71 goes into 87 1 times with a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 71 from 87 and we're left with 16.
Fetch the next digit (0) from the dividend, attach it to 16 and continue: 160 / 71

Step 3:
If we divide 160 by 71, we get 2 and a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 142 from 160 leaves us with 18.
Fetch the next digit (4) from the dividend, attach it to 18 and continue: 184 / 71

On to step 4:
71 can be fit into 184 2 times, resulting in a remainder of 42.
Write down 2 as next digit of the result. 
Result so far: 122.0
Subtracting 142 from 184 leaves us with 42.
Append the next digit (8) from the dividend to 42 and continue with: 428 / 71

Let's proceed to step 5:
71 goes into 428 6 times with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 1226.0
The remainder is 2 after subtracting 426 from 428.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 71

Going ahead to step 6:
The number 71 fits into 28 0 times, leaving a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 12260.0
Deduct 0 from 28 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 7:
The number 71 fits into 280 3 times, leaving a remainder of 67.
Use 3 as the next digit of our solution. 
Result so far: 12260.3
Subtracting 213 from 280 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 8:
71 goes into 670 9 times with a remainder of 31.
The next digit of our result is 9. 
Result so far: 12260.39
Subtract 639 from 670 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 9:
71 goes into 310 4 times with a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 12260.394
If we take 284 away from 310, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 10:
When dividing 260 by 71, we get 3 with a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 12260.3943
Deduct 213 from 260 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 11:
71 goes into 470 6 times with a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 12260.39436
Subtracting 426 from 470 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 12:
The number 71 fits into 440 6 times, leaving a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 12260.394366
If we take 426 away from 440, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final result is 12260.394366 with a remainder of 1.4e-06.