1/167*(3又3/5*25+38.125*6又2/5)

问题描述:

1/167*(3又3/5*25+38.125*6又2/5)

=1/167*(18/5*25+38.125*32/5)
=1/167*(18*5+7.625*32)
=1/167*(90+244)
=1/167*334
=2