The third grade students do exercises, if there are 16 people in a row, or every 18 people in a row, there will be 1 person. How many people do exercises at least in the third grade?
三年级同学做操，如果每16人一排，或每18人一排都余1人．三年级最少有多少人做操？
<gadget id="calculator">2 * 2 * 2 * 2 * 3 * 3</gadget>
<output>144</output>

<gadget id="calculator">144 + 1</gadget>
<output>145</output>

<result>145</result>