Fast help for this one

Answer:
a. -5
b. 6254
c. - 1881
d. -1200
Step-by-step explanation:
Sorry,I think you can use your calculator to solve your problem but remember don't forget to follow the rules of numeral operation.
CMIIW
[tex]( - 32) \div 8 \times 2 + 2 - ( - 1) \\ = ( - 32) \div 8 \times 2 + 2 + 1 \\ = - 4 \times 2 + 2 + 1 \\ = - 8 + 2 + 1 \\ = - 8 + 3 \\ = - 5[/tex]
[tex]53 \times ( - 9) - ( - 109) \times 53 \\ = 53 \times ( - 9) + 109 \times 53 \\ = 53( - 9 + 109) \\ = 53 \times 100 \\ = 5300[/tex]
[tex] - 19 \times 99 \\ = - 1881[/tex]
[tex]( - 63) \times 12 + 12 \times ( - 37) \\ = 12( - 63 - 37) \\ = 12 \times ( - 100) \\ = - 1200[/tex]
Hope you could understand.
If you have any query feel free to ask.