A kind of glasses is sold at 80 yuan per pair, and each pair can make a profit of 25%. Later, due to unsatisfactory sales, each pair began to be sold at a 10% discount. According to this calculation, how much profit can each pair of glasses make now?
一种眼镜，按每副80元出售，每副可盈利25%；后来因销售不理想，开始每副打九折出售．照这样计算，现在每副眼镜可盈利多少元？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">80 * (9/10)</gadget>
<output>72</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">80 / (5/4)</gadget>
<output>64</output>

<gadget id="calculator">72 - 64</gadget>
<output>8</output>

<result>8</result>