For a two-digit number, move the decimal point to the left by one and three places to the left to obtain two decimals. It is known that the product of the two decimals is 0.1764. What is the original two-digit number?
一个两位数，小数点向左移一位和向左移动三位得到两个小数，已知两个小数的乘积为0.1764，则原来的两位数是多少．
<result>42</result>