Little common sense: Being short is not a bad thing. Generally, a short person lives 6%-20% longer than a tall person. If the life span of a tall person is 80 years old, according to this calculation, how long can a short person live up to.
小常识：个子矮并不是坏事，通常矮个子比高个子寿命长6%-20%，若高个子的寿命是80岁，照这样计算，矮个子的寿命最长可达多少岁．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">80 * (6/5)</gadget>
<output>96</output>

<result>96</result>