bonjour
25 000 x 280 = 2.5 * 10 ⁴ x 2.8 * 10 ² = 7 * 10 ⁶
30 000 x 850 = 3 x 10 ⁴ x 8.5 x 10 ² = 25.5 x 10 ⁶ = 2.55 x 10 ⁷
72 000 x 90 = 7.2 x 10 ⁴ x 9 x 10 = 64.8 x 10 ⁵ = 6.48 x 10 ⁶
330 x 850 000 = 3.3 x 10 ² x 8.5 x 10 ⁵ = 28.05 x 10 ⁷ = 2.805 x 10 ⁸
