و آر ایل:https://media.istockphoto.com/id/1343990827/zh/向量/set-of-12-math-and-typography-sign-in-red-and-white-circle-shape.jpg?s=1024x1024&w=is&k=20&c=xk-57I45_36iv1nJb5RrRqw8wixP-lpwh_rnBvRl83k=
و آر ایل:https://www.istockphoto.com/hk/向量/set-of-12-math-and-typography-sign-in-red-and-white-circle-shape-gm1343990827-422480059
