let the first number be X
let the second number be Y
X - Y = 1818
XY = 20352035
X = 1818 + Y
Y(Y + 1818) = 20352035
Y^2 +1818Y - 20352035 =0
using the quadratic formula,
u will get
Y = 3693 since both numbers are positive
XY = 20352035
3693X = 20352035
X = 5511
