90485 ÷ 7 = 12926 R3
Alright, let's work through the division of 90485 by 7 step by step.

Step 1:
7 goes into 9 1 times with a remainder of 2.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 7 from 9 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 7

Step 2:
7 goes into 20 2 times with a remainder of 6.
Write down 2 as next digit of of the result. 
Result so far: 12
Subtract 14 from 20 to get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 7

Step 3:
7 goes into 64 9 times with a remainder of 1.
Write down 9 as next digit of of the result. 
Result so far: 129
Subtract 63 from 64 to get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 7

Step 4:
7 goes into 18 2 times with a remainder of 4.
Write down 2 as next digit of of the result. 
Result so far: 1292
Subtract 14 from 18 to get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 7

Step 5:
7 goes into 45 6 times with a remainder of 3.
Write down 6 as next digit of of the result. 
Result so far: 12926
Subtract 42 from 45 to get 3.

The final result is 12926 with a remainder of 3.