Is what asking you to divide it? What are you trying to do? We can't see your screen.
It's normal for the total tax on your tax return to be less than the tax withheld on your W-2. That's why you get a refund. You had more tax withheld than you actually owe. However, you asked specifically about *income* tax. Before your refund is calculated, there could be other taxes added that technically are not income tax, but are still taken out of the tax you had withheld. There can also be refundable credits that are subtracted from your total tax.
