About (2/3) of the cities in my country have insufficient water supply, and among these cities with insufficient water supply, about (1/4) of the cities are seriously short of water, and there are about 110 cities with severe water shortage. Approximately how many cities are there in my country?
我国约有(2/3)的城市供水不足，在这些供水不足的城市中，又约有(1/4)的城市严重缺水，严重缺水的城市约有110个．我国大约有多少个城市？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(2/3) * (1/4)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">110 / (1/6)</gadget>
<output>660</output>

<result>660</result>