Cross reference
Matthew 22:19
19 Show me the tax money." They brought to him a denarius.
Matthew 18:28
28 "But that servant went out, and found one of his fellow servants, who owed him one hundred denarii,{100 denarii was about one sixtieth of a talent.} and he grabbed him, and took him by the throat, saying, 'Pay me what you owe!'
Matthew 20:2
2 When he had agreed with the laborers for a denarius{A denarius is a silver Roman coin worth 1/25th of a Roman aureus. This was a common wage for a day of farm labor.} a day, he sent them into his vineyard.
Revelation 6:6
6 I heard a voice in the midst of the four living creatures saying, "A choenix{A choenix is a dry volume measure that is a little more than a litre (a little more than a quart).} of wheat for a denarius, and three choenix of barley for a denarius! Don't damage the oil and the wine!"