Computation of Purchase Invoice taxes and charges

Can somebody explain how to simulate the taxes computation, because if im about to deduct the 10% discount and then the 1% w/holding tax after, i think im not getting the right computation which is 22.28?

Hi @Denmark_Del_Puso
please check
https://frappe.github.io/erpnext/user/manual/en/accounts/articles/what-is-the-differences-of-total-and-valuation-in-tax-and-charges

Thanks