There are two tanks of oil, the first tank is (2/3) of the second tank's quality. If 8 kilograms of oil are poured from the second tank into the first tank, the quality of the two tanks is equal, how much is the original oil in the second tank? (solution by equation)
两箱油，第一箱是第二箱质量的(2/3)．如果从第二箱倒出8千克油放入第一箱，则两箱油质量相等，第二箱原有油多少千克？(用方程解)
<gadget id="calculator">8 + 8</gadget>
<output>16</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">16 / (1/3)</gadget>
<output>48</output>

<result>48</result>