If the two decimals are rounded and approximated, the values obtained are 2.7 and 20 respectively, how many possible values are there for the integer part of the product of the original two decimals?
如果将两个小数四舍五入近似之后，分别得到的数值为2.7和20，那么原来两个小数乘积的整数部分共有多少种可能的取值．
<result>5</result>