Mathematical problems: Formula A banner, with a total length of 8 meters, is required to be pasted with 10 characters. The width of the font is 40 cm and the width of the head and tail is 80 cm. How to calculate the spacing of each character

Mathematical problems: Formula A banner, with a total length of 8 meters, is required to be pasted with 10 characters. The width of the font is 40 cm and the width of the head and tail is 80 cm. How to calculate the spacing of each character

8x100 = 800 (CM)
Set the spacing to xcm
80*2+40*10+(10-1)*x=800
560+9x=800
9x=240
X = 26 and two-thirds of a centimeter