How many litres of ammonia are riquired to react with 145 litres of oxygen according to the following reaction? 4NH3+5O2+_4NO+6H2O

I have rewritten the equation so that it makes more sense.

4NH3 + 5O2 ==>4NO + 6H2O
145 L O2 x (4 moles NH3/5 moles O2) = 145 x 4/5 = ?