25430 ÷ 9 = 2825 R5
Alright, let's work through the division of 25430 by 9 step by step.

Step 1:
9 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 2 to get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 9

Step 2:
9 goes into 25 2 times with a remainder of 7.
Write down 2 as next digit of of the result. 
Result so far: 2
Subtract 18 from 25 to get 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 9

Step 3:
9 goes into 74 8 times with a remainder of 2.
Write down 8 as next digit of of the result. 
Result so far: 28
Subtract 72 from 74 to get 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 9

Step 4:
9 goes into 23 2 times with a remainder of 5.
Write down 2 as next digit of of the result. 
Result so far: 282
Subtract 18 from 23 to get 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 9

Step 5:
9 goes into 50 5 times with a remainder of 5.
Write down 5 as next digit of of the result. 
Result so far: 2825
Subtract 45 from 50 to get 5.

The final result is 2825 with a remainder of 5.