The Science and Technology Museum received 620 tourists today, 10 fewer than yesterday (7/8). How many people did you receive yesterday?
科技馆今天接待游客620人，比昨天接待人数的(7/8)少10人．昨天接待了多少人？
<gadget id="calculator">620 + 10</gadget>
<output>630</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">630 / (7/8)</gadget>
<output>720</output>

<result>720</result>