What is the ratio of 15cm:1.3m?
15cm：1.3m的比值是多少．
<gadget id="calculator">1.3 * 100</gadget>
<output>130</output>

<gadget id="calculator">15 / 130</gadget>
<output>3/26 = around 0.115385</output>

<result>3/26 = around 0.115385</result>