The sum of three consecutive two-digit even numbers is divisible by 7. What is the smallest possible sum of these three numbers?
三个连续的两位偶数，它们的个位数字之和能被7整除，这三个数的最小和可能是多少？
<gadget id="calculator">16 + 18 + 20</gadget>
<output>54</output>

<result>54</result>