To transport hot fluid, a circular tube with an outer diameter of $15$ cm and an inner diameter of $13$ cm is used. The inner surface of the tube's wall is $200$DegC, while the outer surface of the tube's wall is $55$DegC. What is the steady$-$state heat transport rate across the tube wall per meter length if the thermal conductivity of the tube wall is $20$ W$/($m$-$K$)?$

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