Question

1除以2除以3除以4除以5除以6除以7除以8除以9=2.8

Answer 1

共有5种算法：

1/(2/3)/4/(5/6/7/8)/9=2.8

1/(2/(3/4))/(5/6/7/8)/9=2.8

1/(2/(3/4/5)/6/7/(8/9))=2.8

1/(2/(3/4/(5/6))/7/(8/9))=2.8

1/(2/(3/4/(5/6/7))/(8/9))=2.8