$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}{\left({\mathtt{60}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{30}}}{{\mathtt{60}}}}\right)}{\mathtt{\,\times\,}}{\mathtt{278.5}} = {\mathtt{242.394\: \!061\: \!319\: \!29}}$$
.
