//180000 + 71*x\\ ||-------------|| |\ 25000 /| |---------------| \ 196250 + 97*y / ----------------- 25000
36 71*x -- + ----- 5 25000 --------------------- 25000*(196250 + 97*y)
9 71*x ----- + --------- 31250 625000000 ----------------- 196250 + 97*y
1.6e-9*(180000.0 + 71.0*x)/(196250.0 + 97.0*y)
180000 + 71*x ------------------------------- 122656250000000 + 60625000000*y
36 71*x -- + ----- 5 25000 --------------------- 25000*(196250 + 97*y)
180000 + 71*x ------------------------------- 122656250000000 + 60625000000*y