There are 6 red balls, 2 yellow balls and some balls of other colors in a box, which are identical except for their color. If the probability that a ball is drawn is red is (1/3), how many balls of other colors are there in the box.
盒子里有6个红球、2个黄球和一些其它颜色的球，这些球除颜色外完全相同．如果摸出一个球是红球的可能性为(1/3)，盒子里其它颜色的球有多少个．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / (1/3)</gadget>
<output>18</output>

<gadget id="calculator">18 - 6 - 2</gadget>
<output>10</output>

<result>10</result>