Question

1)3,12:0,6+24:0,75-8:25+28:0,35=
2)(56,42:1,4-1,536:0,32)*2,1-6,8=
3)120-(7,0056:0,072+14,62)=
4)(4*1,125-4,5)*6,84+(3,54+1,824):0,76=