A canteen spent 982.4 yuan on flour in October, which was 506.23 yuan more than buying rice. How much does it cost to buy rice?
某食堂十月份买面粉用去982.4元，比买大米多用去506.23元．买大米用去多少元？
<gadget id="calculator">982.4 - 506.23</gadget>
<output>476.17</output>

<result>476.17</result>