The actual length of a mobile phone part is 1.4 cm. How long can it be drawn on a drawing with a scale of 20:1?
一个手机零件的实际长度是1.4厘米，把它画在比例尺是20：1的图纸上，能画多长？
<gadget id="calculator">20 / 1</gadget>
<output>20</output>

<gadget id="calculator">1.4 * 20</gadget>
<output>28</output>

<result>28</result>