We divide 25290320 by 870
We're looking to find how many times 870 goes into 25290320.

Step 1:
When dividing 2 by 870, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 870

Step 2:
870 can be fit into 25 0 times, resulting in a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 25 leaves us with 25.
Take the next digit (2) from the dividend and append it to 25, then repeat: 252 / 870

Advancing to step 3:
252 divided by 870 is 0 with a remainder of 252.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 252, we get 252.
Fetch the next digit (9) from the dividend, attach it to 252 and continue: 2529 / 870

Let's proceed to step 4:
870 can be fit into 2529 2 times, resulting in a remainder of 789.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 1740 from 2529 leaves us with 789.
Take the next digit (0) from the dividend and append it to 789, then repeat: 7890 / 870

Let's proceed to step 5:
The number 870 fits into 7890 9 times, leaving a remainder of 60.
The next digit of our result is 9. 
Result so far: 29.0
If we take 7830 away from 7890, we end up with 60.
Bring next digit (3) of the dividend behind the 60 and repeat the process: 603 / 870

Let's proceed to step 6:
603 divided by 870 is 0 with a remainder of 603.
Use 0 as the next digit of our solution. 
Result so far: 290.0
Deduct 0 from 603 and we're left with 603.
Grab the next digit (2) from the dividend, add it to 603, then carry on: 6032 / 870

Step 7:
If we divide 6032 by 870, we get 6 and a remainder of 812.
The number 6 becomes the next digit in our result. 
Result so far: 2906.0
The remainder is 812 after subtracting 5220 from 6032.
Fetch the next digit (0) from the dividend, attach it to 812 and continue: 8120 / 870

Moving on to step 8:
If we divide 8120 by 870, we get 9 and a remainder of 290.
Use 9 as the next digit of our solution. 
Result so far: 29069.0
If we subtract 7830 from 8120, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 9:
If we divide 2900 by 870, we get 3 and a remainder of 290.
The number 3 becomes the next digit in our result. 
Result so far: 29069.3
Deduct 2610 from 2900 and we're left with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Let's proceed to step 10:
870 goes into 2900 3 times with a remainder of 290.
The number 3 becomes the next digit in our result. 
Result so far: 29069.33
Subtracting 2610 from 2900 leaves us with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

The final result is 29069.33 with a remainder of 0.29.