What is the addition formula of (2/5)*3?
把(2/5)*3写成加法算式是多少．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) + (2/5) + (2/5)</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>