If legalization reduced current narcotics enforcement costs by one-third to one-fourth, it might save $6 - $9 billion per year.
enforcement costs reduced by one-third to one-fourth would save a lot of money
( z1 reduce :ARG1 ( z2 cost :ARG1 ( z3 enforce ) ) :ARG2 ( z4 product-of :op "1/3" :op ( z5 product-of :op "1/4" :op ( z6 monetary-quantity ) ) ) :ARG0-of ( z7 save :ARG1 ( z8 money :quant ( z9 lot ) ) ) )