A certain fertilizer factory can produce 630 tons of fertilizer in 7 days. According to this calculation, how many tons of fertilizer can be produced in one day and night?
某化肥厂7天可以生产630吨化肥，照这样计算，一昼夜生产化肥多少吨？
<gadget id="calculator">630 / 7</gadget>
<output>90</output>

<result>90</result>