We have two objects ParentObject__c and ChildObject__c. The ChildObject__c (child) has master detail relationship with ParentObject__c (master). The both objects have a custom field named Amount__c but the Amount__c field on ChildObject__c should be calculated as follows.
ChildObject__c.Amount__c = (ParentObject__c.Amount__c / Total number of ChildObject__c records for ParentObject__c record)
Do you want to deploy a set of changes, or create a self-contained application? Choose a development model.
The sfdx-project.json file contains useful configuration information for your project. See Salesforce DX Project Configuration in the Salesforce DX Developer Guide for details about this file.