The food store shipped 500 kilograms of oranges, and the number of oranges shipped was 3 more boxes than bananas. It is known that each box of oranges weighs 20 kilograms, and each box of bananas weighs 21.5 kilograms. How many kilograms of bananas are shipped?
食品店运来500千克桔子，运来的桔子比香蕉多3箱．已知每箱桔子重20千克，每箱香蕉重21.5千克，运来香蕉共多少千克？
<gadget id="calculator">500 / 20</gadget>
<output>25</output>

<gadget id="calculator">25 - 3</gadget>
<output>22</output>

<gadget id="calculator">22 * 21.5</gadget>
<output>473</output>

<result>473</result>