Xiao Ming buys a movie ticket at will (each row has 40 seats), what is the possibility of buying a seat number that is a multiple of 2 and buying a seat number that is a multiple of 5?
小明任意买一张电影票(每排有40个座位)，买到座位号是2的倍数与买到座位号是5的倍数的可能性的是多少．
<gadget id="calculator">8 - 4</gadget>
<output>4</output>

<gadget id="calculator">20 + 4</gadget>
<output>24</output>

<gadget id="calculator">24 / 40</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>