The store shipped some fruits, and sold 2 kilograms less than its (1/3) and 4 kilograms more than its (1/5). How many kilograms of fruit does the store sell?
商店运来一些水果，卖出的比它的(1/3)少2千克，比它的(1/5)多4千克．商店卖出水果多少千克？
<gadget id="calculator">4 + 2</gadget>
<output>6</output>

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

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/3) - (1/5)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">6 / (2/15)</gadget>
<output>45</output>

<gadget id="calculator">45 * (1/3)</gadget>
<output>15</output>

<gadget id="calculator">15 - 2</gadget>
<output>13</output>

<result>13</result>