Correct voltage displayoutput from ADC MCP3008

I will check the voltage of a LIFEPO4 Akku and need an Output from 24V to 30V. It will display me only the voltage 2.4 to 3.0. Is there a way to multiply the result by 10 that the voltage value is correct.

Ya, scaling is needed.

how I can do it in Cayenne with Raspberry