with so many 0's behind your transactions, you could forget one, or add an extra.
Thousand separator help you to read and input big XBT numbers. (1 XBT = 100 satoshis)
1,234,567 XBT ≈ 1.2 BTC ≈ 1,234 mBTC
Typical transaction fees: 100 - 500 XBT
Dust limit: 54 XBT