While calculating elasticities, I am kinda confused whether I should take the number in thousands or hundreds

for example - monthly demand for downloadable ebook is Q= 2- 0.4Peb+0.0005I+0.15Phb where Peb = $10.68, I = $2300 and Phb = $21.4

now I is in thousands and Peb and Phb are in tens, so, while putting all the numbers in equation, should I put as it is? or put Income as 23 instead of 2300?

please suggest