c speed 500.0 dec/s, 1/0
c speed 2000.0 dec/s, 2/1
c speed Infinity dec/s, 3/1
c speed Infinity dec/s, 4/3
c speed Infinity dec/s, 5/5
c speed 1000.0 dec/s, 1/0
c speed Infinity dec/s, 2/0
c speed Infinity dec/s, 3/0