Complex sentence: However, as stated earlier, the profit on 270 slaves was around £7,000 or £8,000 in the eighteenth century, so the profit according to these constraints would have been between around £5,548 and £6,341 on this voyage.
Split into simpler sentences: However, as stated earlier, the profit on 270 slaves was around £7,000 or £8,000 in the eighteenth century. The profit according to these constraints would have been between around £5,548 and £6,341 on this voyage.