16. Xiaoming and Xiaoliang are two stamp collectors. Xiaoming exchanged two stamps with a face value of 1 yuan 6 jiao each for Xiaoliang's stamps with a face value of 2 jiao each (based on the face value of the stamps). Before the exchange, Xiaoliang had 5 times as many stamps as Xiaoming. After the exchange, Xiaoliang had 3 times as many stamps as Xiaoming. Therefore, the total number of stamps the two have is $\qquad$.

【Analysis】First, according to 1 yuan 6 jiao $=16$ jiao, it can be obtained that Xiaoming used two stamps with a face value of 1 yuan 6 jiao to exchange for 16 stamps with a face value of 2 jiao from Xiaoliang, so after the exchange, Xiaoming's stamps increased by 14 (16-2=14) pieces; then, according to the fact that before the exchange, the number of stamps the two people had was 6 $(5+1=6)$ times the number of Xiaoming's stamps, and after the exchange, the number of stamps the two people had was $4(3+1=4)$ times the number of Xiaoming's stamps, so the $2(6-4=2)$ times the number of Xiaoming's stamps before the exchange is $56(14 \times 4=56)$ pieces, from which the number of stamps Xiaoming had before the exchange can be determined, and thus the total number of stamps the two people have can be found.

【Solution】Solution: 1 yuan 6 jiao $=16$ jiao
The number of stamps Xiaoming has after the exchange increased by:
$16 \times 2 \div 2-2$
$=16$ - 2
$=14$ (pieces)
The number of stamps Xiaoming had before the exchange is:
$14 \times 4 \div[(5+1)-(3+1)]$
$=56 \div 2$
$=28$ (pieces)
The total number of stamps the two people have:
$$
\begin{array}{l}
28 \times(5+1) \\
=28 \times 6 \\
=168 \text { (pieces) }
\end{array}
$$

Answer: The two people have a total of 168 stamps.
The answer is: 168.