The engineering team paved 200 square meters of playground in 4 days. According to this progress, the playground was paved in 32 days. Find the area of the playground. (Two ways to solve, one of which uses proportional solution)
工程队铺运动场，4天铺了200平方米．照这样的进度，32天铺好了运动场，求这运动场的面积．(两种方法解答，其中一种用比例解)
<gadget id="calculator">200 * 32</gadget>
<output>6_400</output>

<gadget id="calculator">6_400 / 4</gadget>
<output>1_600</output>

<result>1_600</result>