[tex]\text {Hi There! Let's Solve this Problem!}[/tex]
[tex]\text {Since we are trying to find how many milligrams (mg) are in 13 grams}[/tex] [tex]\text {we Multiply 1000.}[/tex]
[tex]\text {\underline {Multiply}}[/tex]
[tex]\text {1000*13=}[/tex]
[tex]\text {Your Answer Would Be:}[/tex]
[tex]\fbox {13000}[/tex]
[tex]\text {Best of Luck!}[/tex]