Why the result of total thermel load is not a regular number? How can i solve the problem?

The number is expressed in E notation, a variation on scientific notation that is common in programming languages. You can convert it to a “regular number” by multiplying the value before the letter e by 10 raised to the power of the value after the letter e.

5.4901e+6 = 5.4901 × 10^{6} = 5,490,100