A round table has a diameter of $1.40 \, \text{m}$. For a party, the table is expanded by adding three planks, each $40 \, \text{cm}$ wide, as shown in the figure. If each person at the table should have a space of $60 \, \text{cm}$, how many guests can sit at the table?
![](https://cdn.mathpix.com/cropped/2024_05_01_bd5219fde2a4a59a7005g-2.jpg?height=506&width=724&top_left_y=618&top_left_x=996)