for equations like this, it's a simple matter of remembering the order for your calculation - remember BEDMAS(Brackets, Exponents, Divide, Multiply, Add, Subtract)
So for this calculation
7 + 42 / 6 * 5
do division first (42/6) = 7, leaving
7+7*5
then multiplication (7*5) = 35, leaving
7+ 35 = 42
4 plus 6 times 5 is equal to 34.
-4
356,433,300
5 x 6 + 1000 = 1030
110
4 plus 6 times 5 is equal to 34.
8
6
-4
5 times 6= 30 30+4=34 easy:/?
356,433,300
5 x 6 + 1000 = 1030
110
110
99
25 times 6 times 25 minus 8 plus 12 divided by 5 = 3,744.4
4 + 6 + 6 + 5 + 5 + 4 + 6 + 5 + 5 + 6 + 5 + 5 + 5 + 3 = 70