Hexadecimal to decimal.

Hey All,

In the attatchment I have multiple hexadecimal numbers which I would like to be shown as decimal numbers next to hexadecimals. On the attatchemnt there is also instructions which digits are measuring values and which are something else. There is also mention about which value is LSB. I would like to have function how to convert those values easily to decimals but I do not have idea how to convert that long hexadecimals to decimals.
Could somebody help me to make that function?

Thank you in advance,

Best regards,
Eemilv