\u533b\u751f\u5efa\u8bae\u4e00\u4e2a\u4eba\u5e73\u5747\u6bcf\u5929\u5403\u76d0\u6700\u591a5\u514b\uff0c\u4e00\u888b\u76d0\uff08400\u514b\uff09\u4f60\u6700\u5c11\u80fd\u5403\u591a\u5c11\u5929

400\u00f75=80\uff08\u5929\uff09\uff0e\u7b54\uff1a\u4e00\u888b\u76d0\uff08400\u514b\uff09\u4f60\u6700\u5c11\u80fd\u540380\u5929\uff0e

500\u00f75\u00f74=100\u00f74=25\uff08\u5929\uff09\u7b54\uff1a\u4e00\u5305\u76d0\uff08500\u514b\uff094\u4e2a\u4eba\u81f3\u5c11\u80fd\u540325\u5929\uff0e