Grandma's age this year is 65 years old, Li Hua's age will be grandma's (2/5) five years later, what is Li Hua's current age?
奶奶今年的年龄是65岁，五年后李华的年龄是奶奶的(2/5)，李华现在的年龄是多少岁．
<gadget id="calculator">65 + 5</gadget>
<output>70</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">70 * (2/5)</gadget>
<output>28</output>

<gadget id="calculator">28 - 5</gadget>
<output>23</output>

<result>23</result>