I dont remember doing this last year, but when putting in deductions for your car/truck registration Im a little confused.

For Iowa registration deductions you must take the cost of the registration, minus the weight of the vehicle divided by 250.

So they give an example, registration cost of $150, minus 3,000lbs, divided by 250. The answer? $138

So I tried it...I get $-11.4. WTF?

Anybody come across this?