If I assume the ppfd was properly measured on the Amazon lights that’s 478 μMole/M2 -S per unit.
The calculation from the Post here
And the calculation in a 4x4 tent at 60 points thanks to YouTuber migro
gives me 2,657.7718478986 μMole/M2 -S
IDK if adding them together does anything, but if it does I got 4,569.7718478986 μMole/M2 -S in the tent rn. I’m tired, so please correct me if I’m wrong. Hopefully I didn’t get sick with what’s going around here 
Okay that math doesn’t seem to add up for me.
I followed the DLI calculator here, but now I’m just left more confused as to my DLI as it says I have 2.43 hours until I reach 40 DLI and I know I can’t be right, so I’ll leave it here and let those who ocwn help tell me what I did wrong😅