Tang Seng said to his three apprentices: "There are 25 prime numbers from 0 to 100. How many composite numbers are there?" The clever Wukong immediately gave the correct answer: how many composite numbers are there from 0 to 100.
唐僧对三个徒弟说："0--100有25个质数，合数有几个？"，聪明的悟空马上说出正确答案：0--100有多少合数．
<gadget id="calculator">99 - 25</gadget>
<output>74</output>

<result>74</result>