There are three input boxes for each value A, B, C. Upon any input changes, the related calculation will trigger. Please refer to the details at : https://stackblitz.com/edit/stackblitz-starters-m1genmfu?file=src/main.ts As shown on one scenario C will calculated by A + B = C The another scenario is that A will calculated by C - B = A All values are represented in its own input box. This will well work by previous properties within a clas, but how to do by signals for zoneless applications? Continue reading...