Convert between standard and scientific notation
Examples:
• Speed of light: 299,792,458 = 2.99792458 × 10⁸ m/s
• Planck constant: 6.62607015 × 10⁻³⁴ J·s
• Avogadro number: 6.02214076 × 10²³ mol⁻¹
• Electron mass: 9.1093837 × 10⁻³¹ kg