There is a column of numbers, the first number is 1, starting from the second number, each number is 3 greater than the adjacent number before it, and the last number is 100, multiplying the numbers in this column, then at the end of the calculation result How many consecutive zeros are there in .
有一列数，第1个是1，从第2个数起，们每个数比它前面相邻的数大3，最后一个数是100，将这列数相乘，则在计算结果的末尾中有多少个连续的零．
<gadget id="calculator">7 + 2</gadget>
<output>9</output>

<result>9</result>