FOG + FOG + FOG + FOG = 1464

FOG + FOG + FOG + FOG = 1464. If F,O and G are digits in a three-digit number in the preceding equation the F + O + G = ?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #520