How many instances of "r" are there in:
Improved stiffness and heavy-duty construction of truck wiper blades is achieved by using riveted joints , which is a very important feature considering large lengths of wipers used in transport vehicles. Thanks to a special adaptor system these wiper blades can be mounted on virtually any truck or bus manufactured anywhere in the world.
MOTGUM wiper blades for trucks and buses comply with FIAT 9.93605 and DAEWOO EDS – M – 7501 norms regarding functionality and material properties. Both rubbers and complete wiper blades are certified with „B” safety certificates (compulsory for all automotive parts sold in Poland). The entire process of manufacturing is periodically qualified and evaluated by MOTGUM’s major consignees.
user
I found forty-four "r"s in the provided passage.
assistant