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				@@ -457,7 +457,7 @@ module.exports = app => { 
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				                 if (!c) continue; 
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				                 for (const cb of changeBillsPart[cid]) { 
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				-                    cb.tp = this.ctx.helper.mul(cb.spamount, cb.unit_price, this.ctx.tender.info.decimal.tp); 
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				+                    cb.tp = this.ctx.helper.mul(cb.spamount, cb.unit_price, c.tp_decimal || this.ctx.tender.info.decimal.tp); 
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				                     cb.used_tp = this.ctx.helper.mul(cb.used_qty, cb.unit_price, this.ctx.tender.info.decimal.tp); 
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				                     c.used_tp = this.ctx.helper.add(c.used_tp, cb.used_tp); 
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