50 000 000
×
= 6.4 × × 7.8125 ×
= (6.4 × 7.8125 ) × = 50 ×
= 50 000 000
0.2⁶ × 50⁷ = (0.2×50)⁶ × 50¹
... = 10⁶ × 50
... = 50,000,000
_____
If you do this in the straightforward way, you have ...
... = 0.000064 × 781,250,000,000 = 50,000,000
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