The current price of a commodity is 90 yuan, which is 10 yuan lower than the original price. How much is the reduction?
一种商品现价90元，比原价降低了10元，降低了多少
<gadget id="calculator">90 + 10</gadget>
<output>100</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>