please explain how to get each numbers

Vertical Analysis 2020 2019 Sales Cost of sales Gross profit 900 000 520 000 380 000 140 000 65 000 Selling expenses 870000 100% 460 000 532 410 000 47.12 93 000 $0.3.2 61 000 154 000 256 000 Administrative expenses Total operating expenses 205 000 Profit before income tax 175 000 Income tax expense 52 500 76 800 Profit 122 500 179 200 npur UCI WYSIS NU UISLUSS the userulness of horizontal and vertical analysi3. LU3 Operating data for Spectre Ltd are presented here. 2020 Sales Cest of sales Selling expenses Administrative expenses Income tax expense Profit $900 000 520000 140 000 65000 52 500 122 500 2019 $870 000 460 000 93000 61 000 760 179 200 Required a. Prepare a schedule showing a vertical analysis for 2020 and 3919