30 142 + z = 49 * 876
30 142 + z = 42804
z = 42804 - 30 142
z = 12 662
51 815 = 1205 * (p - 975)
51 815 = 1205p - 1205 * 975
51 815 = 1205p - 1 183 875
1 235 690 = 1205p
p = 1 235 690 / 1205
p ≈ 1 026.4
30 142 + z = 49 * 876
30 142 + z = 42804
z = 42804 - 30 142
z = 12 662
51 815 : (p - 975) = 120551 815 = 1205 * (p - 975)
51 815 = 1205p - 1205 * 975
51 815 = 1205p - 1 183 875
1 235 690 = 1205p
p = 1 235 690 / 1205
p ≈ 1 026.4