54/45 · 60/48 · 30/310=
54/45=1.260/48=1.2530/310=0.0961.2+1.25+0.096=2.546your answer is 2.546 hope this help!
54/45 * 60/48 = 1.5
1.5 / 310/30 = 0.00016129032 a.k.a
Hope it helps! :D
