The original design mass of "Shenzhou VII" manned spacecraft was about 8 tons. Chinese scientists used carbon fiber composite materials in the actual manufacture of the spacecraft, so that the quality of the spacecraft was reduced by 12.5% compared with the original. What is the mass of the "Shenzhou 7" manned spacecraft now?
"神舟"七号载人飞船原来设计的质量约是8吨．我国科学家在实际制造飞船时使用了碳纤维复合材料，这样飞船的质量就比原来减轻了12.5%．现在"神舟"七号载人飞船的质量是多少吨？
<gadget id="calculator">12.5 / 100</gadget>
<output>0.125</output>

<gadget id="calculator">1 - 0.125</gadget>
<output>0.875</output>

<gadget id="calculator">8 * 0.875</gadget>
<output>7</output>

<result>7</result>