Scale, which is equivalent to centimeters on the map, is actually equivalent to meters.
Therefore, on the map with the scale of 1: 2000000, it means that 1 cm on the map = 20000000 meters in reality.
So the measurement is 5.5 cm, which is actually 5.5 * 2000000 =11000000 meters.
On the map with the scale of 1: 5000000, there are
1 1000000 / 5000000 = 2.2 ,
That is, it corresponds to a map with the scale of 1: 5000000, and the distance on the map is 2.2 cm.
I wish I could help you,