500-[(16x18-192:f):7+14x5+10]:4x7+5=299
[(288-192:f):7+70+10]:4x7+5=500-299
[(288-192:f):7+80]:4x7+5=201
[(288-192:f):7+80]:4x7=201-5
[(288-192:f):7+80]:4x7=196
[(288-192:f):7+80]:4=196:7
[(288-192:f):7+80]:4=28
(288-192:f):7+80=28*4
(288-192:f):7+80=112
(288-192:f):7=112-80
(288-192:f):7=32
288-192:f=32x7
288-192:f=224
288-224=192:f
192:f=64
f=192:64
f=3
