People's Park held a flower show. On May Day, 630 people visited in the morning, 318 people left at noon, and another 145 people came. Now most people are visiting?
人民公园举行花展，五一这天，上午有630人来参观，中午有318人离去，又有145人到来．现在又多数人在参观？
<gadget id="calculator">630 - 318</gadget>
<output>312</output>

<gadget id="calculator">312 + 145</gadget>
<output>457</output>

<result>457</result>