The ten million RMB was turned into ten thousand diamonds.
It cost one hundred diamonds to spin once, meaning he could spin one hundred times. The system was really thoughtful as there was a new level on the side of the machine with a note :"Draw ten: Spend 990 diamonds, 10*whatever you drew."
"... What a great deal," Chen Mo said sarcastically.
That meant spending nine hundred and ninety gems would multiply whatever you drew by ten (not ten different equipment).
And save ten diamonds.
Chen Mo rolled his eyes at the thought that ten diamonds meant ten thousand RMB, but there was nothing else he could do but accept it.
He pulled the spin ten lever.
The reels started spinning with various types of equipment flashing on the screen. It didn't take long before they settled down.
Design - Numerics - Numerics balancing skillbook (level 2)