A number is 4 more than 2% of 20, what is this number?
一个数比20的2%多4，这个数是多少？
<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">20 * (1/50)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) + 4</gadget>
<output>22/5 = around 4.4</output>

<result>22/5 = around 4.4</result>