Xiaoming used (2/5) tons of cement for decoration on the first day, and used (2/15) more tons on the second day than on the first day. How many tons are shared between the two days?
小明家装修用水泥，第一天用去(2/5)吨，第二天比第一天多用了(2/15)吨，两天共用多少吨？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">(2/5) + (2/15)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">(2/5) + (8/15)</gadget>
<output>14/15 = around 0.933333</output>

<result>14/15 = around 0.933333</result>