How to Calculate Cable Size by Hand and using Software || Based on Voltage Drop and Current Rating

How to perform cable sizing calculations for 6 x 22 kW (45 A/phase) motors following Standard AS/NZS 3008 by hand and using the software. The software used was Cable Pro Web https://elek.com/electrical-software/... Minimum conductor size based on voltage drop and current rating requirements. It's very important to understand how to perform the hand calculations.