to calculate Ea i solved for slope and i got -7.6111x10^3

so i did this for Ea:

7.61x10^3 x 8.314/mole= 63.3 KJ/Mol

but someone told me im missing the number 2.30? that i have to mulitply

(2.30)(8.314)(7.61x10^3)=?

which is right?