1. Antwortmöglichkeit ist richtig

[(629.371 : 60) : 60] : 24 = 7,28d

Umkehrrechnung $\Rightarrow \backslash Rightarrow$ (7 $\cdot \backslash cdot$ 60 $\cdot \backslash cdot$ 60 $\cdot \backslash cdot$ 24) = 604.800s

Rest herausfinden $\Rightarrow \backslash Rightarrow$ 629.371 - 604.800 = 24.571s

(24.571 : 60) : 60 = 6,83h

Umkehrrechnung $\Rightarrow \backslash Rightarrow$ (6 $\cdot \backslash cdot$ 60 $\cdot \backslash cdot$ 60) = 21.600s

Rest herausfinden $\Rightarrow \backslash Rightarrow$ 24.571 - 21.600 = 2.971s

(2.971 : 60) = 49,52min

Umkehrrechnung $\Rightarrow \backslash Rightarrow$ (49 $\cdot \backslash cdot$ 60) = 2.940s

Rest herausfinden $\Rightarrow \backslash Rightarrow$ 2.971 - 2.940 = 31s

$\Rightarrow \backslash Rightarrow$ 629.371s = 7d 6h 49min 31s

$\Rightarrow \backslash Rightarrow$ 2.&3. Antwortmöglichkeit $\Rightarrow \backslash Rightarrow$ falsch