[51 -(18 3/4 - 1÷ 8/15 )× 1 23/25]÷ 0.62
=[51 -(150/8-15/8)*48/25]/0.62
=(51-135/8*48/25)/0.62
=(255/5-162/5)/0.62
=93/5*100/62
=30
[51 -(18 3/4 - 1÷ 8/15 )× 1 23/25]÷ 0.62
=[51 -(150/8-15/8)*48/25]/0.62
=(51-135/8*48/25)/0.62
=(255/5-162/5)/0.62
=93/5*100/62
=30