It is known that the sum of two numbers is 73, and the smaller number is obtained by removing one digit in the larger number, what is the product of these two numbers?
已知两个数的和是73，去掉较大数中的一位数字得到的恰是较小的数，则这两个数的乘积多少．
<gadget id="calculator">67 * 6</gadget>
<output>402</output>

<result>402</result>