Huimin Supermarket had 782 customers in the morning and 694 left at noon. Another 502 people came in the afternoon. How many people are there in the supermarket?
惠民超市上午有顾客782人，中午有694人离去．下午又来了502人，这时超市有多少人？
<gadget id="calculator">782 - 694</gadget>
<output>88</output>

<gadget id="calculator">88 + 502</gadget>
<output>590</output>

<result>590</result>