"72除以八十"...72除以八十
"72除以81"...72除以81
"72除以9×48除以8等于几"...72除以9×48除以8等于几
"72除以8等于几"...72除以8等于几
"72除以8+20"...72除以8+20
"72除以8+30"...72除以8+30
"72除以8+2"...72除以8+2
"72除以80"...72除以80
"72除以80等于几"...72除以80等于几
"嗯72除以8"...嗯72除以8