7. (10 points) Fill in the blanks with different digits in the following equation: $\square \times(\square+\square \square) \times(\square+\square+\square+\square$
$\square ）=2014$. The maximum sum of five single-digit numbers is ( )
A. 15
B. 24
C. 30
D. 35
7. (10 points) Fill in the blanks with different digits in the following equation: $\square \times(\square+\square \square) \times(\square+\square+\square+\square \square) = 2014$. The maximum sum of five one-digit numbers is ( )
A. 15
B. 24
C. 30
D. 35
【Solution】Solution: According to the problem, $2014=2 \times 19 \times 53$, to maximize the sum of five one-digit numbers, the two-digit number should be the smallest. From $2 \times(a+\overline{1 \mathrm{~b}}) \times(c+d+e+\overline{3 \mathrm{f}})=2014$, we can get $\left\{\begin{array}{l}a+b=9=9+0 \\ c+d+e+f=23=8+6+5+4\end{array}\right.$, $\therefore(2+a+c+d+e)$ max $=2+9+8+6+5=30$,
Therefore, the answer is: $C$.