[ 3.5 times 118=3.588 3.58 times 2.154=7.35512 ] the results should be 7.35 times 10^12

The given expressions contain both numerical and non-numerical parts. Let's break them down:<br /><br />1. $3.5 \times 158 = 3.55$<br /> - This statement. The correct calculation is $3.5 \times 158 = 553$.<br /><br />2. $3.5L8 \times 2.7EC = 7.35E+2$<br /> - This expression contains non-numerical characters 'L' and 'E', making it ambiguous and not a standard mathematical operation. Therefore, it cannot be evaluated as a standard arithmetic expression.<br /><br />If you have any specific questions or need further clarification, please let me know!