In order to celebrate the 60th anniversary of the founding of the People's Republic of China, five primary schools made 200 lanterns, 80 of which were made in 4 days. According to this calculation, after 7 days of making, how many lanterns are left?
五间小学为了庆祝建国六十周年，要做200个灯笼，4天做了80个，照这样计算，做了7天后，还剩多少个没做？
<result>140</result>