"290除以494等于几"...290除以494等于几

　"4920除以13×25等于几"...4920除以13×25等于几

　"4930除以29等于几"...4930除以29等于几

　"2940-2940除以28×21等于几"...2940-2940除以28×21等于几

　"4920除以二十"...4920除以二十

　"4346除以290等于几"...4346除以290等于几

　"290除以46等于几"...290除以46等于几

　"290除以45等于几"...290除以45等于几

　"290除以47等于几"...290除以47等于几

　"2940除以28×21等于几"...2940除以28×21等于几