Four small boxes can fit in one big box. If 50 big boxes can fit four small boxes each, each having 40 candles, calculate the total number of candles in all small boxes.
If 50 big boxes are fit 4 small boxes each, the number of small boxes is 4*50 = <<50*4=200>>200
Since the small boxes have 40 candles each, there are 40*200 = <<40*200=8000>>8000 candles in total.
#### 8000