Question

54702:9*40-(145973+712480:8)=

Answer 1

54702:9*40-(145973+712480:8) = 54702:9*40-(145973+89060) = 54702:9*40-235033 = 6078*40-235033 = 243120 - 235033 = 8087

Answer 2

54702:9*40-(145973+712480:8)= 8087

1).  712480:8 = 89060

2). 145973 + 89060 =  235033

3).  54702:9 = 6078 

4).6078* 40 =  243120

5).  243120 - 235033 =  8087