The price of real estate in a certain area has increased by 10% this year compared to the same period last year. The price per square meter this year is 6,600 yuan. How much was the price per square meter last year?
某地区房地产价格今年比去年同期增加了一成，今年每平方米售价6600元，去年每平方米售价多少元？
<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">6_600 / (11/10)</gadget>
<output>6_000</output>

<result>6_000</result>