IP packet total length of $1980B$ to be sent over the link with MTU $510B.$ Header length is $20B.$ Packet must be fragmented. Calculate $($in bytes$)$ the entire length of the first fragment $($including data and IP header$)$ and the offset value. Both numbers separated by a colon, with the packet length in the first position. $($e$.$g$.155$:$13){}_4$