71713128 divided by 870 
We want to figure out the number of times 71713128 can be divided by 870.

Step 1:
870 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 870

Step 2:
The number 870 fits into 71 0 times, leaving a remainder of 71.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 71 and we're left with 71.
Include the next digit (7) from the dividend after 71, then repeat: 717 / 870

Advancing to step 3:
If we divide 717 by 870, we get 0 and a remainder of 717.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 717, we end up with 717.
Take the next digit (1) from the dividend and append it to 717, then repeat: 7171 / 870

Moving on to step 4:
The number 870 fits into 7171 8 times, leaving a remainder of 211.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtracting 6960 from 7171 leaves us with 211.
Append the next digit (3) from the dividend to 211 and continue with: 2113 / 870

Moving on to step 5:
When dividing 2113 by 870, we get 2 with a remainder of 373.
Put 2 as the next digit of the answer. 
Result so far: 82.0
If we take 1740 away from 2113, we end up with 373.
Take the next digit (1) from the dividend and append it to 373, then repeat: 3731 / 870

Advancing to step 6:
When dividing 3731 by 870, we get 4 with a remainder of 251.
Record the quotient 4 as the next digit in the result. 
Result so far: 824.0
Subtracting 3480 from 3731 leaves us with 251.
Include the next digit (2) from the dividend after 251, then repeat: 2512 / 870

Going ahead to step 7:
If we divide 2512 by 870, we get 2 and a remainder of 772.
The next digit of our result is 2. 
Result so far: 8242.0
The remainder is 772 after subtracting 1740 from 2512.
Grab the next digit (8) from the dividend, add it to 772, then carry on: 7728 / 870

Let's proceed to step 8:
870 can be fit into 7728 8 times, resulting in a remainder of 768.
Record the quotient 8 as the next digit in the result. 
Result so far: 82428.0
Subtract 6960 from 7728 to get 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Advancing to step 9:
When dividing 7680 by 870, we get 8 with a remainder of 720.
Write down 8 as next digit of the result. 
Result so far: 82428.8
Deduct 6960 from 7680 and we're left with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Let's proceed to step 10:
870 goes into 7200 8 times with a remainder of 240.
Put 8 as the next digit of the answer. 
Result so far: 82428.88
If we take 6960 away from 7200, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Our division results in 82428.88 with a remaining 0.24.