Answer:
There are 30 cows and 28 chickens. How many didn't?
I drift forever with the current down these long canals theyโve made, Tame, yet wild, I run elusive Multitasking to your aid. Before I came, the world was darker, colder, sometimes, rougher, true. But though I might make living easy, Iโm good at killing people too.
What is the freedom of birds and the pen of old men?
My thunder comes before the lightning. My lightning comes before the clouds. My rain dries all the land it touches.
A harvest sown and reaped on the same day in an unplowed field. Which increases without growing, remains whole though it is eaten within and without. Is useless and yet the staple of nations.
If itโs information you seek, come and see me. If itโs pairs of letters you need, I have consecutively three. What am I?