87032 + 40983 = 320475 – 9396 = 360 · 127 = 209 · 506 = 250315 : 5 = 628320 : 204 =
87032+40983=128015 320475-9396=311079 360*127=45720 209*506=105754 250315:5=50063 628320:204=3080