Can someone explaain how to get the equation for logic languages ControlLogix and Siemens S7

P74 The transmitter of the FT 104 orifice flow meter (Figure P7 4) is adjusted so that the electrical output signal span of 4 to 20 mA represents 10 to 300 pounds/hour of steam flow The 4 to 20 mA signal is connected to an analog input module having an ADC whose output integer value corresponds to the lowest and highest flows as: P74 The transmitter of the FT 104 orifice flow meter (Figure P7 4) is adjusted so that the electrical output signal span of 4 to 20 mA represents 10 to 300 pounds/hour of steam flow The 4 to 20 mA signal is connected to an analog input module having an ADC whose output integer value corresponds to the lowest and highest flows as