"54-77除以2等于几"...54-77除以2等于几

　"54-28除以4等于几"...54-28除以4等于几

　"54+42除以7等于几"...54+42除以7等于几

　"57+24除以8等于几"...57+24除以8等于几

　"54+27除以9等于几"...54+27除以9等于几

　"54除以77等于几"...54除以77等于几

　"54-22除8等于几"...54-22除8等于几

　"54除以7等于多少"...54除以7等于多少

　"54+6除以72等于几"...54+6除以72等于几

　"57-40除以8等于几"...57-40除以8等于几