CRC in Cyclone V Devices

I attached an extract of the document.

For me also the formulas are still not clear. I highlighted a part in yellow. So, the maximum time is calculated by a division, the minimum time with a multiplication. This can't work due to units. One time, we devide by seconds, the other we multiply with seconds and the result shall be a number with the unit seconds. So, where is the failure?

Again, I'm interested in the time the Cyclone V needs for a CRC detection over the whole device...

Thanks!