Can VAPI perform calculations, such as determining the Loan-to-Value (LTV) ratio, and then apply conditional logic (using "if," "and," "or," "else") to determine the next steps in a workflow. For example, we would like the AI to interact with incoming applicants, ask questions to gather data on the current value of their home and their mortgage balance, and then calculate the LTV. Based on the result (whether the LTV is above or below 50%), the AI integrated into our GHL account would trigger different workflows. Is VAPI AI is capable of handling both the math calculations and the conditional logic to automate this process?