Knowing the importance of saving water, Xiao Ming decided to start with the little things around him, so he put a mineral water bottle full of water in his toilet. The volume of the water tank of the toilet is 5 cubic decimeters, and the water consumption is now reduced (1/3) compared to the original. Do you know the volume of the mineral water bottle that Xiao Ming put in the toilet?
小明知道了节约用水的重要性后，决定从自己身边的小事做起，于是，他在自己家马桶中放入了一个盛满水的矿泉水瓶．马桶的水箱容积是5立方分米，现在用水量比原来节约了(1/3)，你知道小明在在马桶里放入的矿泉水瓶的体积吗？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<result>5/3 = around 1.666667</result>