A supermarket earns 100,000 yuan in February this year, and the income in March is 90% of the income in February, so how much is the income in March?
某超市今年二月份收入10万元，三月份收入是二月份收入的九成，则三月份收入是多少万元？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">10 * (9/10)</gadget>
<output>9</output>

<result>9</result>