A number minus its (2/5) equals 1.44, what is this number? ．
一个数减去它的(2/5)等于1.44，这个数是多少？．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1.44 / (3/5)</gadget>
<output>2.4</output>

<result>2.4</result>