A pile of goods was transported by car. The original plan was to transport 80 tons per hour, and the shipment was completed in 9 hours. Actually transport 90 tons per hour, how many hours can it be transported?
用汽车运一堆货物，原计划每小时运80吨，9小时运完．实际每小时运90吨，多少小时可以运完？
<gadget id="calculator">9 / 90</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">80 * (1/10)</gadget>
<output>8</output>

<result>8</result>