13. (15 points) The digital display of an electronic calculator is broken, and some areas that should light up do not, causing a one-digit by one-digit multiplication problem with a two-digit product to appear in a strange way (let's represent it using matchsticks).
Xiao Ming used matchsticks to arrange one possible equation:
Please, what are the possible products of the equation shown in the figure?

保留源文本的换行和格式，直接输出翻译结果如下：

13. (15 points) The digital display of an electronic calculator is broken, and some areas that should light up do not, causing a one-digit by one-digit multiplication problem with a two-digit product to appear in a strange way (let's represent it using matchsticks).
Xiao Ming used matchsticks to arrange one possible equation:
Please, what are the possible products of the equation shown in the figure?
【Answer】Solution: The numbers in the figure may be $4, 5, 6, 8, 9$, so the equation could be:
(1) $5 \times 9=45, 9 \times 5=45$;
(2) $6 \times 8=48, 8 \times 6=48$;
(3) $6 \times 9=54, 9 \times 6=54$;
(4) $8 \times 8=64$.
Answer: The products of the equations shown in the figure are 45, 48, 54, 64.