getAddress lower: 0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed
getAddress upper: 0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed
parseEther 1.5: 1500000000000000000
formatEther round-trip: 1.500000000000000000
parseUnits 6dec: 123456789
formatUnits 6dec: 123.456789
parseUnits gwei: 25000000000
formatUnits gwei: 25.000000000
ethers parity: ok
