This calculation if it finds null value brings the value from the realcop field.On the contrary, it performs the operation
Use the result of calculated field (Saldo_Cop) and divides it by the data provided in the "tasaCambio" source. There he performs the conversion of pesos to USD per month. The problem is that he performs the calculation by columns but not by rows. I could analyze that generates field-level calculations either columns, rows but do not realize it.