Let’s see 2 ways in which the modal verb shall can be used more frequently.
To make suggestions (with the subject “WE”)
👉 Shall we visit my mother after work? → ¿Vamos a ver a mi madre después de trabajar?
👉 Shall we study for the exam? → ¿Estudiamos para el examen?
To make offers (with the subject “I”)
👉 Shall I prepare some coffee? → ¿Te preparo un café?
👉 Where shall I put this box? → ¿Dónde pongo esta caja?