You can't split them up into several smaller gear pairs, so you actually need two gears with 720 and 1151 teeth. A gear with 1151 teeth is impractical to make,

You can't split them up into several smaller gear pairs, so you actually need two gears with 720 and 1151 teeth. A gear with 1151 teeth is impractical to make, both in terms of size and in terms of the manufacturing capability at the time.