If the size of the base of a cylinder remains the same and the height is increased by 40%, what is its original volume?
一个圆柱的底面大小不变，高增加40%后体积是原来的多少
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<result>7/5 = around 1.4</result>