Inner Mongolian milk tea is a traditional hot beverage of the Inner Mongolian people, which is made from brick tea, water and fresh milk. With a cup of fragrant Inner Mongolia milk tea, you can experience the enthusiasm of the people of Inner Mongolia. The mass ratio of water, brick tea and milk required to make Inner Mongolia milk tea is 4:1:15. How many grams of brick tea are needed to brew 200g of Inner Mongolia milk tea?
内蒙古奶茶是内蒙古民族传统的热饮料，由砖茶、水和鲜奶熬制而成．一杯香香的内蒙古奶茶，就可以体会到内蒙古人民的热情．制作内蒙古奶茶所需的水、砖茶和牛奶的质量比是4：1：15．冲制200g内蒙古奶茶需要砖茶多少g．
<gadget id="calculator">4 + 1 + 15</gadget>
<output>20</output>

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">200 * (1/20)</gadget>
<output>10</output>

<result>10</result>