It depends on what mode you are in but the motor essentially matches what you put in. So if you put in 180w the motor would put in 60w/90w/180w (Eco is 30%, trail 50%, turbo is 100% as standard, all are customisable but no mode goes over 100%.
So 240w/270w/360w is going through the wheel but the motor never gives more than 250w. so if you are in turbo mode, there is no point putting in more than 280 watts as it won’t give you any more than 530w at the wheel, unless you are over 25kph, then it’s all coming from your legs as the motor (by law) has to switch off totally.
If you are in Eco mode (30%), your legs would provide 355w and the motor 175w, giving you more of a workout. You can ask for as little as 10% assist.
*edit* these are all assumptions based on me riding it and playing with all the settings, if anyone actually knows the tech behind how it works, I’m happy to be corrected.
Edit 2. Think of the motor as a device that simply combines the 2 inputs (battery and legs) into one output at the chainring, but it will never take more than 250w from the battery.