The rDOT exchange rate Ci grows with the increase in Staking income. It is determined by the total number of DOT locked in the staking contract Qstk, the total number of redeemed DOT Qred, the number of staking rewards Qrew, the number of slash Qslh, the commission rate Rcom, the total number of rDOT issued M, and the total number of burnt rDOT N. The calculation formula is as follows: