用语文作业占整个教室用数学作业占一个食堂
[yòng yŭ wén zuò yè zhàn zhĕng gè jiào shì yòng shù xué zuò yè zhàn yī gè shí táng]
It's a playful exaggeration expressing being overwhelmed by homework. It humorously depicts how much work there is: Chinese language assignments fill the classroom, math ones fill the cafeteria.