If 123 = 12, 233 = 24, 132 = 18, 532 = 30 then 145 = ?

Question

On behalf of Sture Sjöstedt

Answer 1

40
123=1+2+3=6*middle digit= 6*2=12
233=2+3+3=8*3=24
.......
145=1+4+5=10*4=40