"321×654除以987除以654x987+321"...321×654除以987除以654x987+321

　"321×654除以987除以650"...321×654除以987除以650

　"987除以(345-298)x65"...987除以(345-298)x65

　"987除以46等于多少"...987除以46等于多少

　"56×50除以98等于几"...56×50除以98等于几

　"987除以46等于几"...987除以46等于几

　"987除以44等于几"...987除以44等于几

　"6958除以98等于几"...6958除以98等于几

　"350×4除以98等于几"...350×4除以98等于几

　"98×98除以98等于几"...98×98除以98等于几