A pile of goods is transported by car. The original plan is to transport 120 tons per hour, and it can be transported in 9 hours. The actual transport is 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120吨，9小时可以运完，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">120 * (1/10)</gadget>
<output>12</output>

<result>12</result>