In a packet switched network, a source host transmits packets of $1500$ bytes each, which travels over one link to a router then from the router over a second link to a destination end system. The propagation speed on both links is $2\backslash$times $10\%$ m$/$s$.$ The transmission rate of the first link and the second link is $200$Mbps and $170$Mbps respectively. Packet processing on the router consumes $3$ microseconds per kilobyte. The length of the first link is $1200$ km$,$ and the length of the second link is $1100$ km$.$ Assume no other packets exist in the network and no packets are lost. Ignore the processing and queueing delay on hosts. Provide the answers to the following questions. The answer must be in microseconds and rounded to the tenth, and written in the given order, for example, $"9345\mathrm{.}0,234\mathrm{.}1,823\mathrm{.}2,48\mathrm{.}7,333\mathrm{.}3"($without the quotes$).$ Use $1$ kilobytes $=1000$ bytes for calculation. $1.$ What is the total delay from the source to the router of the first packet, i$.$e$.$ the time from the beginning of the transmission to the arrival of the last bit? Include the processing time on the router. $2.$ What is the end$-$to$-$end $($from the source to the destination$)$ delay of the first packet? $3.$ What is the end$-$to$-$end delay of the second packet? $4.$ What is the end$-$to$-$end delay of the third packet? $5.$ What is the end$-$to$-$end delay of the $100-$th packet?