Spark-shell meaning of displayed Number on Stage

[Stage 5:=====>  (26372 + 264) / 27840] 

[stage 6:=========> (0 + 200 ) / 200 ] 

Hi, I'm using spark 1.6.1.

I use spark-shell to see the data and i want to know the meaning of each number here.

( A + B / C )