Well, in 6 hours there is a total of 360 minutes. Plus the next 42 minutes then, we will have 402 minutes as a final total. So, like we have 60 minutes in each hour we need to multiply 60 by the number of hour that is 6 and then add the next 42 minutes to get the final answer..Like this: 60 x 6 = 360 + 42 = 402.