Original: For example, 1.5 &times; 30 (which equals 45) will show the same result as 1,500,000 &times; 0.03 (which equals 45,000).
Simplified: On a slide rule 1.5 × 30 (which equals 45) will show the same result as 1,500,000 × 0.03 (which equals 45,000).