There are several basketballs, volleyballs, and footballs in the sports room. The number of basketballs is 1/3 of the total number of the three balls. The number of footballs is 3 less than that of basketballs. The ratio of the number of footballs to volleyballs is 2:3. How many balls are there in total?
体育室有篮球、排球、足球若干个，其中篮球的个数是三种球总数的(1/3)，足球的个数比篮球少3个，足球个数与排球的比是2：3．三种球共有多少个？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/3) * (2/5)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">(1/3) - (4/15)</gadget>
<output>1/15 = around 0.066667</output>

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

<result>45</result>