That's what the controller does. Controllers intended for brushed DC motors are typically not intended for voltage this high, as it is both expensive and unnecessary for typical applications, but it can be done and can even make sense in some cases (cue Duncan, for a description of his DeviceIs there a type of regulator I can get? Most I have seen do not go very high to handle this large of voltage.
The normal solution is to connect the battery modules in a configuration which provides lower voltage with higher current capability.