148×125=37×(4×125)=37×500=18500
148x125=(100+40+8)x125=100x125+40x125+8x125=12500+5000+1000=18500
148x125=148*1000/8=148000/8=18500
148X125=1ooⅹ125+48ⅹ125=12500+8X125ⅹ6=12500+6000=18500