22485 ÷ 2 = 11242 R1
We're going to perform division on 22485 with 2 as the divisor.

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

Step 2:
2 goes into 2 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 11
Subtract 2 from 2 to get 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 2

Step 3:
2 goes into 4 2 times with a remainder of 0.
Write down 2 as next digit of of the result. 
Result so far: 112
Subtract 4 from 4 to get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 2

Step 4:
2 goes into 8 4 times with a remainder of 0.
Write down 4 as next digit of of the result. 
Result so far: 1124
Subtract 8 from 8 to get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 2

Step 5:
2 goes into 5 2 times with a remainder of 1.
Write down 2 as next digit of of the result. 
Result so far: 11242
Subtract 4 from 5 to get 1.

The final result is 11242 with a remainder of 1.