The Export property exports each line of the control including its result. Use the Text property to specify the control's text. The MultiLine property specifies whether the control accepts multiple lines. Use the TextLine property to access the line based on its index. Use the InsertText method inserts text/lines to control. Use the InsertLockedText method inserts locked text/lines to control. Use the Result property to get the result, if the expression is valid. 

The following screen shot shows how the control is:

while the following shows what the Export gets:

100 * 1.5 [=150]
120 * 1.5 [=180]
130 * 1.5 [=195]
Total [=525]