For a two-digit number, the number in the tens place is the size of the number in the ones place (2/3), and the two-digit number is a multiple of 3, then what is the two-digit number.
一个两位数，十位上的数字是个位上数字大小的(2/3)，且这个两位数是3的倍数，那么这个两位数是多少．
<result>69</result>