If legalization reduced current narcotics enforcement costs by one-third to one-fourth, it might save $6 - $9 billion per year.
enforcement costs by one-third to one-fourth equals a lot less money spent
( z1 equal :ARG1 ( z2 monetary-quantity :ARG2-of ( z3 cost :ARG1 ( z4 enforce ) ) ) :ARG2 ( z5 monetary-quantity :ARG1-of ( z6 spend ) :ARG1-of ( z7 have-quant :ARG3 ( z8 less :quant ( z9 lot ) ) ) ) :ARG3 ( z10 times :quant "1/3" ) )