Marley split up the area of a rectangle to help him solve the division equation 769÷4=?
He splits the rectangle into parts that are easy to divide by 4 and a remainder:

The area model split into 4 parts, each with a width of 4 units. From top to bottom the parts have a height of A units and an area of 400 square units; a height of B units and an area of 360 square units; a height of C units and an area of 8 square units; an unlabeled height and an area of 1 square unit. A brace labeled H spans the top 3 parts.
Complete the equations.
a=a=a, equals
units
b=b=b, equals
units
c=c=c, equals
units
h =h=h, equals
units
769 \div 4 =769÷4=769, divided by, 4, equals
remainder