I use spreadsheet in building financial models based on the client needs. I can build a production model for medium and small scale enterprises. For example, using various data available, I can determine what quantity of items should be produced to achieve a target profit that would cover both fixed cost and variable cost. I can also build a model that will help to determine whether or not a certain project should be accepted or rejected. If a project is to be financed partly with loan and partly equity, I can build a model to accommodate the loan and the interest on the loan and to show if project can generate return that would cover both the loan and the interest on the loan and if the loan should be accepted or rejected.
On data analysis. I combine my expertise in accounting and softwares system to managing analysing financial data.