We divide 80521301 by 870
Let's see how many times 870 fits into 80521301.

Advancing to step 1:
870 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 870

Going ahead to step 2:
870 can be fit into 80 0 times, resulting in a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Take the next digit (5) from the dividend and append it to 80, then repeat: 805 / 870

Step 3:
870 goes into 805 0 times with a remainder of 805.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 805 to get 805.
Bring next digit (2) of the dividend behind the 805 and repeat the process: 8052 / 870

On to step 4:
If we divide 8052 by 870, we get 9 and a remainder of 222.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 7830 from 8052 and we're left with 222.
Bring next digit (1) of the dividend behind the 222 and repeat the process: 2221 / 870

Step 5:
870 goes into 2221 2 times with a remainder of 481.
Use 2 as the next digit of our solution. 
Result so far: 92.0
The remainder is 481 after subtracting 1740 from 2221.
Include the next digit (3) from the dividend after 481, then repeat: 4813 / 870

Advancing to step 6:
870 can be fit into 4813 5 times, resulting in a remainder of 463.
Use 5 as the next digit of our solution. 
Result so far: 925.0
If we take 4350 away from 4813, we end up with 463.
Include the next digit (0) from the dividend after 463, then repeat: 4630 / 870

Step 7:
When dividing 4630 by 870, we get 5 with a remainder of 280.
Record the quotient 5 as the next digit in the result. 
Result so far: 9255.0
Subtracting 4350 from 4630 leaves us with 280.
Fetch the next digit (1) from the dividend, attach it to 280 and continue: 2801 / 870

Advancing to step 8:
The number 870 fits into 2801 3 times, leaving a remainder of 191.
Record the quotient 3 as the next digit in the result. 
Result so far: 92553.0
Deduct 2610 from 2801 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Moving on to step 9:
870 goes into 1910 2 times with a remainder of 170.
Use 2 as the next digit of our solution. 
Result so far: 92553.2
If we subtract 1740 from 1910, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Going ahead to step 10:
870 goes into 1700 1 times with a remainder of 830.
The number 1 becomes the next digit in our result. 
Result so far: 92553.21
Subtract 870 from 1700 to get 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8300, and continue the process.

Step 11:
8300 divided by 870 is 9 with a remainder of 470.
The number 9 becomes the next digit in our result. 
Result so far: 92553.219
If we take 7830 away from 8300, we end up with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Advancing to step 12:
The number 870 fits into 4700 5 times, leaving a remainder of 350.
Put 5 as the next digit of the answer. 
Result so far: 92553.2195
If we subtract 4350 from 4700, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 13:
When dividing 3500 by 870, we get 4 with a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 92553.21954
Deduct 3480 from 3500 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.

Step 14:
The number 870 fits into 200 0 times, leaving a remainder of 200.
The next digit of our result is 0. 
Result so far: 92553.21954
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 15:
2000 divided by 870 is 2 with a remainder of 260.
Put 2 as the next digit of the answer. 
Result so far: 92553.2195402
Subtract 1740 from 2000 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 16:
The number 870 fits into 2600 2 times, leaving a remainder of 860.
Use 2 as the next digit of our solution. 
Result so far: 92553.21954022
If we subtract 1740 from 2600, we get 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8600, and continue the process.

In conclusion, the division gives 92553.21954022 with a balance of 8.6e-07.