Carla Vista Corporation's Longboat division's segment margin as a percentage of net sales is $10\%$ for the current reporting period. The division has net sales revenue of $$2507110.$ Operating assets were $$849000$ at the beginning of the period and $$1249000$ at the end. What is the division's ROI?

$10\mathrm{.}00\%$

$23\mathrm{.}90\%$

$11\mathrm{.}95\%$

$8\mathrm{.}40\%$