baskets of pears weigh 78 kilograms in total, if each empty basket weighs 5 kilograms, how many kilograms are these pears in total?
3筐梨，连筐称一共重78千克，如果每个空筐重5千克，这些梨一共有多少千克？
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">78 - 15</gadget>
<output>63</output>

<result>63</result>