Question: determine the resultant internal shear force in kn acting on...

Determine the resultant internal shear force  (in kN) acting on the cross section through point D . Then determine the resultant internal bending moment  (in kN-m) acting on the cross section through point C . Assume the reactions at the supports A and B are vertical. Given W = 200 kN/m, L₁ = 2 m, L₂ = 5.5 m. Please show all work and formulas used. I'm super confused on the distributed load for a triangle. Thank you!