Calculating LED current flow in a parallel circuit
The big problem is that you didn't draw the schematic properly. A good schematic always makes the things clear:







simulate this circuit &ndash; Schematic created using CircuitLab

The current is \$I = \frac{U}{I}\$

I0 = I1+I2

I0 = (5V-2.065V)/270 = 10.87037037mA 

I1 = (2.065V - 1.863V)/100 = 2.02mA

I2 = I0 - I1 = 8.85037037mA