The price of a children's tricycle is 290 yuan, which is exactly 10% of an adult electric car. How much is the price of an adult electric car?
一辆儿童三轮车售价是290元，刚好是一辆成人电动车的10%，一辆成人电动车售价是多少元？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">290 / (1/10)</gadget>
<output>2_900</output>

<result>2_900</result>