smc

If the person wins the bet, the person has $\frac{3}{2}$ of the previous amount. If the person loses the bet, the person only has $\frac{1}{2}$ of the previous amount. Because of the Commutative Property, the order of multiplying the multipliers does not matter. Thus, the person walks away with $64\cdot \frac{3}{2}\cdot \frac{3}{2}\cdot \frac{3}{2}\cdot \frac{1}{2}\cdot \frac{1}{2}\cdot \frac{1}{2}=27$ dollars, so the person loses $\text{textdollar}37$. The answer is $\boxed{\text{ a loss of }\text{textdollar}37}$.