1.800*\( \frac{1,042^{5+5}-1}{0,042} \) *\( 1,042^{31} \) + R*\( \frac{1,042^{30}-1}{0,042} \) *1,042 = \( \frac{33.000*1,042}{0,042} \)
\( \frac{33.000*1,042}{0,042} \) = 818.714,2857
1.800*\( \frac{1,042^{5+5}-1}{0,042} \) *\( 1,042^{31} \) = 78.091,6429
R*\( \frac{1,042^{30}-1}{0,042} \) *1,042 = R*60,43176305
78.091,6429 + R*60,43176305 = 818.714,2857
R = 12.255,52