500-[(16*18-192:f):7+14*5+10]:4*7+5=299
[(16×18-192:f):7+70+10]:4×7+5 = 500-299
[(288-192:f):7+80]:4×7+5 = 201
[(288-192:f):7+80]:4×7 = 201-5
[(288-192:f):7+80]:4 = 196:7
(288-192:f):7+80 = 28×4
(288-192:f):7 = 112-80
(288-192:f):7 = 32
288-192:f = 32×7
288-192:f = 224
192:f = 288-224
192:f = 64
f = 192:64
f = 3
