How to do 45 times 12 plus 12 times 58 minus 3 times 3 times 4 in a simple way?

How to do 45 times 12 plus 12 times 58 minus 3 times 3 times 4 in a simple way?

45×12+12×58—3×3×4 =45×12+12×5—3×12 =12×(45+58—3) ...

45 times 12 times 58 minus 12 times 3

45X12X58-12X3
=12(45X58-3)
=12(45X50+45X8-3)
=12(2250+360-3)
=12X2607
=2607X10+2607X2
=26070+5214
=31284

378 times 58 minus 378 plus 378 times 43

378 times 58 minus 378 plus 378 times 43
=378×(58-1+43)
=378×100
=37800

In 1.2.4.5.9, the number which is coprime with the other four numbers is ()
Right now!

1
five
nine
Because they are divisors of other numbers, and they are all 1