A mountain village harvested 66 tons of rice this year, an increase of 10% compared to last year. How many tons of rice did this mountain village harvest last year?
某山庄今年稻谷收66吨，比去年增产10%，去年这山庄收稻谷多少吨？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">66 / (11/10)</gadget>
<output>60</output>

<result>60</result>