According to statistics, among the 660 cities in my country, (2/3) have insufficient water supply. Among these cities with insufficient water supply, (3/10) cities are seriously short of water. How many cities are there in my country that are seriously short of water? ?
据统计，我国660个城市中，有(2/3)的城市供水不足，在这些供水不足的城市中，又有(3/10)的城市严重缺水，我国严重缺水的城市有多少个？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">660 * (2/3) * (3/10)</gadget>
<output>132</output>

<result>132</result>