How many consecutive 0s are there at the end of the product obtained by 1*2*3*…*100? Why?
1*2*3*…*100所得的积的末尾有多少个连续的0？为什么？
<gadget id="calculator">100 / 5</gadget>
<output>20</output>

<gadget id="calculator">100 / 25</gadget>
<output>4</output>

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

<result>24</result>