Xiaomin's uncle made a batch of performance costumes for "June 1". On the first day, he completed 1/3 of the total, and on the second day he completed 60% of the total. On the first day, he made 4 sets less than the second day. How many sets did you make on the first day and the second day?
小民的叔叔为"六一"做一批演出服装，第一天完成总数的(1/3)，第二天完成总数的60%，第一天比第二天少做4套，第一天和第二天一共做了多少套？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(3/5) - (1/3)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">4 / (4/15)</gadget>
<output>15</output>

<gadget id="calculator">(1/3) + (3/5)</gadget>
<output>14/15 = around 0.933333</output>

<gadget id="calculator">15 * (14/15)</gadget>
<output>14</output>

<result>14</result>