If 10 \(kg\) of sugar contains crystals, how many sugar crystals are there in 10 \(kg\) and 4.2 \(kg\)?
(I) 10 kg of sugar contains \(=\) crystals.
[Note: Submit the answer as a whole number].
(II) 4.2 kg of sugar \(=\) crystals.
[Note: Submit the answer as a whole number].