If a number is divided by 6, 7, or 8, the remainder is 1. What is the smallest number?
一个数被6、7、8除都余1，这个数最小是多少．
<gadget id="calculator">2 * 3 * 7 * 2 * 2</gadget>
<output>168</output>

<gadget id="calculator">168 + 1</gadget>
<output>169</output>

<result>169</result>