A toy used to sell for 80 yuan, but now it has dropped to 70 yuan. How much has it been reduced?
一种玩具原来卖80元，现在降到了70元，降低了百分之几？
<gadget id="calculator">80 - 70</gadget>
<output>10</output>

<gadget id="calculator">10 / 80</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>