options: f : ok. you should teach me how to do math first . f : ok. you should teach me to play the piano first . f : i have learnt how to do math from you . now , tell me how to play the piano . f : alright . i have learnt how to get a good deal at the market from you .
article: f : listen , let 's make a deal , if i learn how to do maths from you . you have to get music lessons from me . i 'll teach you to love the piano . m : that 's a good exchange .