2+2+105-11+54-43+123-453+546-12+98=
2+2+105-11+54-43+123-453+546-12+98=411
2+2+105-11+54-43+123-453+546-12+98=411 2+2+105=109 109-11+54-43=109 109+123-453+546=325 325-12+98=411