600 pairs of Golden Monkey leather shoes came in from the Golden Monkey shoe store. (1/5) of the total amount sold in the first week, and (3/4) of the total amount sold in the second week. What percentage of the total sales in two weeks? How many pairs were sold in two weeks?
金猴鞋店进来金猴皮鞋600双．第一周卖出总数的(1/5)，第二周卖出总数的(3/4)．两周一共卖出总数的几分之几？两周一共卖出多少双？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/5) + (3/4)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">600 * (19/20)</gadget>
<output>570</output>

<result>570</result>