Do you know the story of "Han Xin ordered soldiers"? In ancient times, Han Xin led 350 soldiers to fight, and dozens of people died in the battle. After the battle, the number of people was counted, so that there were 3 people in a row, and there were 2 more people; 5 people were in a row, 4 people were more; people. Han Xin immediately told the number of people.
你知道"韩信点兵"的故事吗？古代韩信带350名士兵打仗，战死几十人，战后清点人数，令3人一排，多出2人；站5人一排，多出4人；站7人一排，多出6人．韩信马上说出人数是多少．
<gadget id="calculator">105 * 3</gadget>
<output>315</output>

<gadget id="calculator">315 - 1</gadget>
<output>314</output>

<result>314</result>