Joke Collection Website - Mood Talk - 6000 divided by 1.2, how to calculate it quickly? Please talk about your algorithm ideas. . .

6000 divided by 1.2, how to calculate it quickly? Please talk about your algorithm ideas. . .

6000/ 1.2=5000 (vertical division by division)

6000/1.2 = 60000/12 = 5000 (mental arithmetic: after the divisor and the passive divisor are simultaneously amplified by 10 times, 60 divided by12 equals 5, followed by three zeros, which is 5000).