What is -0./50)+0.4(-3/4)? explain and answer the question

The answer is -1.01
I first changed the signs of the ones i could. So -0.75+(2/50)+0.4(-3/4)
Then i multiplied the 0.4*-3/4 which equals -0.3
So you are left with -0.75+(2/50)-0.3
2/50 is equal to 0.04 so now it is  -0.75+0.04-0.3 and the rest is simple math. Which equals -1.01

62926281916 inches of rain: )

The percent increase is 25%