In the two squares of the equation (1/3)*□+2*□=5, fill in a number respectively so that the two numbers are opposite numbers and the equality is true, then the second square What is the number in it.
在等式(1/3)*□+2*□=5的两个方格内，分别填入一个数，使这两个数是互为相反数且等式成立，则第二个方格内的数是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 - (1/3)</gadget>
<output>5/3 = around 1.666667</output>

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

<result>3</result>