Complex sentence: Each revolution is considered as meritorious as reading the inscription aloud as many times as it is written on the scroll, and this means that the more Om Mani Padme Hum mantras that are inside a prayer wheel then the more powerful it is.
Split into simpler sentences: Each revolution is considered as meritorious as reading the inscription aloud as many times as it is written on the scroll. This means that the more Om Mani Padme Hum mantras that are inside a prayer wheel then the more powerful it is.